/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/mcmillan2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:36:45,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:36:45,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:36:45,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:36:45,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:36:45,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:36:45,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:36:45,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:36:45,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:36:45,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:36:45,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:36:45,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:36:45,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:36:45,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:36:45,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:36:45,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:36:45,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:36:45,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:36:45,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:36:45,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:36:45,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:36:45,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:36:45,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:36:45,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:36:45,623 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:36:45,623 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:36:45,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:36:45,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:36:45,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:36:45,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:36:45,925 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:36:45,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/mcmillan2006.i [2021-05-06 11:36:45,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a616e8832/34c5aea8f5154927b6e97e4987b5c364/FLAGde3d97fc9 [2021-05-06 11:36:46,342 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:36:46,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mcmillan2006.i [2021-05-06 11:36:46,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a616e8832/34c5aea8f5154927b6e97e4987b5c364/FLAGde3d97fc9 [2021-05-06 11:36:46,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a616e8832/34c5aea8f5154927b6e97e4987b5c364 [2021-05-06 11:36:46,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:36:46,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:36:46,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:46,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:36:46,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:36:46,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259d52ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46, skipping insertion in model container [2021-05-06 11:36:46,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:36:46,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:36:46,503 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mcmillan2006.i[1009,1022] [2021-05-06 11:36:46,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:46,548 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:36:46,562 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mcmillan2006.i[1009,1022] [2021-05-06 11:36:46,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:46,579 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:36:46,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46 WrapperNode [2021-05-06 11:36:46,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:46,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:36:46,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:36:46,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:36:46,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... [2021-05-06 11:36:46,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:36:46,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:36:46,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:36:46,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:36:46,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:36:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:36:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:36:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:36:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:36:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:36:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:36:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 11:36:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:36:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:36:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:36:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 11:36:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:36:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:36:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:36:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:36:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:36:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:36:46,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:36:46,930 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 11:36:46,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:46 BoogieIcfgContainer [2021-05-06 11:36:46,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:36:46,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:36:46,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:36:46,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:36:46,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:36:46" (1/3) ... [2021-05-06 11:36:46,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f8616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:46, skipping insertion in model container [2021-05-06 11:36:46,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:46" (2/3) ... [2021-05-06 11:36:46,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f8616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:46, skipping insertion in model container [2021-05-06 11:36:46,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:46" (3/3) ... [2021-05-06 11:36:46,936 INFO L111 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2021-05-06 11:36:46,939 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:36:46,942 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:36:46,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:36:46,966 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:36:46,966 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:36:46,966 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:36:46,966 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:36:46,966 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:36:46,966 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:36:46,966 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:36:46,966 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:36:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 11:36:46,979 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:46,979 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:46,980 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1868594418, now seen corresponding path program 1 times [2021-05-06 11:36:46,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:46,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956356043] [2021-05-06 11:36:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:47,030 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:47,243 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:47,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956356043] [2021-05-06 11:36:47,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956356043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:47,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:47,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:36:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449070208] [2021-05-06 11:36:47,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:36:47,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:47,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:36:47,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:36:47,259 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:47,406 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-05-06 11:36:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 11:36:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 11:36:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:47,411 INFO L225 Difference]: With dead ends: 50 [2021-05-06 11:36:47,411 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 11:36:47,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:36:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 11:36:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-05-06 11:36:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-06 11:36:47,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-05-06 11:36:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:47,437 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-06 11:36:47,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-06 11:36:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 11:36:47,438 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:47,438 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:47,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:36:47,439 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash -426319892, now seen corresponding path program 1 times [2021-05-06 11:36:47,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:47,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753523800] [2021-05-06 11:36:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:47,454 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:47,455 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:47,461 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:47,669 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:47,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753523800] [2021-05-06 11:36:47,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [753523800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:47,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:47,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-06 11:36:47,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080875371] [2021-05-06 11:36:47,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 11:36:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 11:36:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:36:47,671 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:47,856 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-05-06 11:36:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 11:36:47,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-06 11:36:47,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:47,858 INFO L225 Difference]: With dead ends: 32 [2021-05-06 11:36:47,858 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 11:36:47,859 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 191.0ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:36:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 11:36:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-05-06 11:36:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-05-06 11:36:47,867 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2021-05-06 11:36:47,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:47,867 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-05-06 11:36:47,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-05-06 11:36:47,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-06 11:36:47,868 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:47,868 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:47,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:36:47,868 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:47,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1328899642, now seen corresponding path program 1 times [2021-05-06 11:36:47,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:47,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395051854] [2021-05-06 11:36:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:47,871 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:47,872 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:47,872 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 11:36:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:47,952 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:47,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395051854] [2021-05-06 11:36:47,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395051854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:47,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:47,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 11:36:47,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581827566] [2021-05-06 11:36:47,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 11:36:47,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:47,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 11:36:47,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:36:47,953 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:48,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:48,026 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-06 11:36:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:36:48,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-05-06 11:36:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:48,028 INFO L225 Difference]: With dead ends: 46 [2021-05-06 11:36:48,028 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 11:36:48,029 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:36:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 11:36:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-05-06 11:36:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-06 11:36:48,034 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 24 [2021-05-06 11:36:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:48,035 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-06 11:36:48,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-06 11:36:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-06 11:36:48,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:48,035 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:48,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:36:48,036 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1936590556, now seen corresponding path program 2 times [2021-05-06 11:36:48,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:48,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754682897] [2021-05-06 11:36:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:48,040 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:48,040 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:48,041 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-06 11:36:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:48,177 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:48,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754682897] [2021-05-06 11:36:48,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1754682897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:48,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:48,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-06 11:36:48,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782021451] [2021-05-06 11:36:48,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 11:36:48,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:48,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 11:36:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:36:48,179 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:48,374 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-05-06 11:36:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 11:36:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-05-06 11:36:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:48,375 INFO L225 Difference]: With dead ends: 42 [2021-05-06 11:36:48,375 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 11:36:48,375 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-05-06 11:36:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 11:36:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-05-06 11:36:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-05-06 11:36:48,387 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 26 [2021-05-06 11:36:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:48,387 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-05-06 11:36:48,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-05-06 11:36:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 11:36:48,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:48,388 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:48,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:36:48,388 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:48,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:48,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1234500350, now seen corresponding path program 3 times [2021-05-06 11:36:48,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:48,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175331312] [2021-05-06 11:36:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:48,392 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:48,392 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:48,393 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-06 11:36:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 11:36:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:48,506 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:48,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175331312] [2021-05-06 11:36:48,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [175331312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:48,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:48,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-06 11:36:48,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418556237] [2021-05-06 11:36:48,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 11:36:48,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:48,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 11:36:48,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:36:48,507 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:48,614 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-05-06 11:36:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 11:36:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-05-06 11:36:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:48,615 INFO L225 Difference]: With dead ends: 60 [2021-05-06 11:36:48,615 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 11:36:48,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:36:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 11:36:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-05-06 11:36:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-05-06 11:36:48,621 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2021-05-06 11:36:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:48,622 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-05-06 11:36:48,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-05-06 11:36:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 11:36:48,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:48,622 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:48,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 11:36:48,623 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:48,623 INFO L82 PathProgramCache]: Analyzing trace with hash -487899940, now seen corresponding path program 4 times [2021-05-06 11:36:48,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:48,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106717317] [2021-05-06 11:36:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:48,629 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:48,629 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:48,630 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-06 11:36:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:36:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:48,793 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:48,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106717317] [2021-05-06 11:36:48,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2106717317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:48,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:48,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-06 11:36:48,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061689495] [2021-05-06 11:36:48,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 11:36:48,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 11:36:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:36:48,794 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:49,045 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-05-06 11:36:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 11:36:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2021-05-06 11:36:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:49,046 INFO L225 Difference]: With dead ends: 52 [2021-05-06 11:36:49,046 INFO L226 Difference]: Without dead ends: 50 [2021-05-06 11:36:49,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:36:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-06 11:36:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-05-06 11:36:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-05-06 11:36:49,053 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2021-05-06 11:36:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:49,053 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-05-06 11:36:49,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:36:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-05-06 11:36:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-06 11:36:49,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:49,054 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:49,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-06 11:36:49,054 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1322580298, now seen corresponding path program 5 times [2021-05-06 11:36:49,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:49,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391632463] [2021-05-06 11:36:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:49,058 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:49,058 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:49,058 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-06 11:36:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:36:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 11:36:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:49,164 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:49,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391632463] [2021-05-06 11:36:49,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391632463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:49,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:49,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-06 11:36:49,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62978855] [2021-05-06 11:36:49,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 11:36:49,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 11:36:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:36:49,165 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:49,327 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-05-06 11:36:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 11:36:49,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2021-05-06 11:36:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:49,328 INFO L225 Difference]: With dead ends: 74 [2021-05-06 11:36:49,328 INFO L226 Difference]: Without dead ends: 50 [2021-05-06 11:36:49,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-05-06 11:36:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-06 11:36:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-05-06 11:36:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-05-06 11:36:49,334 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 44 [2021-05-06 11:36:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:49,335 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-05-06 11:36:49,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-05-06 11:36:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-06 11:36:49,336 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:49,336 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:49,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-06 11:36:49,336 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1186401044, now seen corresponding path program 6 times [2021-05-06 11:36:49,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:49,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573962648] [2021-05-06 11:36:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:49,343 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:49,343 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:49,345 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-06 11:36:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-06 11:36:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:36:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:49,553 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:49,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573962648] [2021-05-06 11:36:49,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1573962648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:49,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:49,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-06 11:36:49,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003936744] [2021-05-06 11:36:49,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 11:36:49,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 11:36:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:36:49,555 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:49,837 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-05-06 11:36:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 11:36:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2021-05-06 11:36:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:49,840 INFO L225 Difference]: With dead ends: 62 [2021-05-06 11:36:49,841 INFO L226 Difference]: Without dead ends: 60 [2021-05-06 11:36:49,841 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 211.2ms TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-05-06 11:36:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-06 11:36:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-05-06 11:36:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-05-06 11:36:49,856 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 46 [2021-05-06 11:36:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:49,856 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-05-06 11:36:49,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:36:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-05-06 11:36:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-06 11:36:49,858 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:49,858 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:49,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-06 11:36:49,859 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:49,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1707008786, now seen corresponding path program 7 times [2021-05-06 11:36:49,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:49,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248641134] [2021-05-06 11:36:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:49,862 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:49,862 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:49,863 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-06 11:36:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-06 11:36:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:36:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:36:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:49,981 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:49,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248641134] [2021-05-06 11:36:49,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [248641134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:49,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:49,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-06 11:36:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437680850] [2021-05-06 11:36:49,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 11:36:49,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 11:36:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:36:49,983 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:50,139 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2021-05-06 11:36:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 11:36:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 54 [2021-05-06 11:36:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:50,141 INFO L225 Difference]: With dead ends: 88 [2021-05-06 11:36:50,141 INFO L226 Difference]: Without dead ends: 60 [2021-05-06 11:36:50,142 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:36:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-06 11:36:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-05-06 11:36:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-05-06 11:36:50,158 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2021-05-06 11:36:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:50,158 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-05-06 11:36:50,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-05-06 11:36:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-06 11:36:50,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:50,160 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:50,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-06 11:36:50,160 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:50,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:50,160 INFO L82 PathProgramCache]: Analyzing trace with hash -275659828, now seen corresponding path program 8 times [2021-05-06 11:36:50,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:50,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607338771] [2021-05-06 11:36:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:50,165 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:50,165 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:50,165 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-06 11:36:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-06 11:36:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:36:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:36:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:50,391 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:50,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607338771] [2021-05-06 11:36:50,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607338771] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:50,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:50,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-06 11:36:50,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907002174] [2021-05-06 11:36:50,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 11:36:50,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 11:36:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-05-06 11:36:50,393 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:50,827 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-05-06 11:36:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 11:36:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-05-06 11:36:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:50,828 INFO L225 Difference]: With dead ends: 72 [2021-05-06 11:36:50,828 INFO L226 Difference]: Without dead ends: 70 [2021-05-06 11:36:50,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 253.7ms TimeCoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:36:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-06 11:36:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-05-06 11:36:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-05-06 11:36:50,834 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 56 [2021-05-06 11:36:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:50,835 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-05-06 11:36:50,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:36:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-05-06 11:36:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-06 11:36:50,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:50,835 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:50,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-06 11:36:50,835 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1978425946, now seen corresponding path program 9 times [2021-05-06 11:36:50,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:50,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453917065] [2021-05-06 11:36:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:50,839 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:50,839 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:50,840 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-06 11:36:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-06 11:36:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:36:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:36:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:36:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:50,979 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:50,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453917065] [2021-05-06 11:36:50,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [453917065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:50,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:50,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-06 11:36:50,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124472382] [2021-05-06 11:36:50,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 11:36:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 11:36:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:36:50,980 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:51,166 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-05-06 11:36:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 11:36:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 64 [2021-05-06 11:36:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:51,168 INFO L225 Difference]: With dead ends: 102 [2021-05-06 11:36:51,168 INFO L226 Difference]: Without dead ends: 70 [2021-05-06 11:36:51,169 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-05-06 11:36:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-06 11:36:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-05-06 11:36:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-05-06 11:36:51,176 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 64 [2021-05-06 11:36:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:51,177 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-05-06 11:36:51,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-05-06 11:36:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-06 11:36:51,177 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:51,177 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:51,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-06 11:36:51,178 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash -442513660, now seen corresponding path program 10 times [2021-05-06 11:36:51,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:51,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308931780] [2021-05-06 11:36:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:51,181 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:51,181 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:51,182 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 11:36:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-06 11:36:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:36:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:36:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:36:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:51,411 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:51,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308931780] [2021-05-06 11:36:51,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1308931780] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:51,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:51,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-06 11:36:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71624544] [2021-05-06 11:36:51,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 11:36:51,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:51,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 11:36:51,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:36:51,413 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:51,824 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-05-06 11:36:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 11:36:51,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 66 [2021-05-06 11:36:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:51,826 INFO L225 Difference]: With dead ends: 82 [2021-05-06 11:36:51,826 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 11:36:51,826 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 274.1ms TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-05-06 11:36:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 11:36:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-05-06 11:36:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-05-06 11:36:51,833 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 66 [2021-05-06 11:36:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:51,833 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-05-06 11:36:51,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:36:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-05-06 11:36:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-06 11:36:51,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:51,834 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:51,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-06 11:36:51,834 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash -832116514, now seen corresponding path program 11 times [2021-05-06 11:36:51,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:51,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322101563] [2021-05-06 11:36:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:51,837 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:51,838 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:51,838 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 11:36:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-06 11:36:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:36:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:36:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:36:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:36:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:52,000 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:52,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322101563] [2021-05-06 11:36:52,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1322101563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:52,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:52,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-06 11:36:52,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532880862] [2021-05-06 11:36:52,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 11:36:52,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 11:36:52,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-05-06 11:36:52,001 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:52,227 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-05-06 11:36:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 11:36:52,227 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 74 [2021-05-06 11:36:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:52,229 INFO L225 Difference]: With dead ends: 116 [2021-05-06 11:36:52,229 INFO L226 Difference]: Without dead ends: 80 [2021-05-06 11:36:52,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:36:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-06 11:36:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-05-06 11:36:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-05-06 11:36:52,239 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2021-05-06 11:36:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:52,240 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-05-06 11:36:52,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-05-06 11:36:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-06 11:36:52,241 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:52,241 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:52,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-06 11:36:52,241 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2005759164, now seen corresponding path program 12 times [2021-05-06 11:36:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:52,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935161240] [2021-05-06 11:36:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:52,247 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:52,247 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:52,248 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:36:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 11:36:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:36:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:36:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:36:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:36:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:52,522 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:52,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935161240] [2021-05-06 11:36:52,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1935161240] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:52,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:52,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-06 11:36:52,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575749823] [2021-05-06 11:36:52,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 11:36:52,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:52,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 11:36:52,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:36:52,524 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:53,095 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-05-06 11:36:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 11:36:53,096 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 76 [2021-05-06 11:36:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:53,096 INFO L225 Difference]: With dead ends: 92 [2021-05-06 11:36:53,096 INFO L226 Difference]: Without dead ends: 90 [2021-05-06 11:36:53,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 335.8ms TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:36:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-06 11:36:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-05-06 11:36:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-05-06 11:36:53,103 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 76 [2021-05-06 11:36:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:53,103 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-05-06 11:36:53,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:36:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-05-06 11:36:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-06 11:36:53,104 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:53,104 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:53,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-06 11:36:53,104 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash -209232234, now seen corresponding path program 13 times [2021-05-06 11:36:53,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:53,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279805592] [2021-05-06 11:36:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:53,111 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:53,112 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:53,112 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:36:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 11:36:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:36:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:36:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:36:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:36:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:36:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:53,270 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:53,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279805592] [2021-05-06 11:36:53,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [279805592] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:53,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:53,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-06 11:36:53,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779351823] [2021-05-06 11:36:53,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 11:36:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 11:36:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:36:53,271 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:53,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:53,548 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2021-05-06 11:36:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 11:36:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 84 [2021-05-06 11:36:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:53,549 INFO L225 Difference]: With dead ends: 130 [2021-05-06 11:36:53,549 INFO L226 Difference]: Without dead ends: 90 [2021-05-06 11:36:53,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 192.2ms TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2021-05-06 11:36:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-06 11:36:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-05-06 11:36:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-05-06 11:36:53,556 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2021-05-06 11:36:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:53,556 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-05-06 11:36:53,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-05-06 11:36:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-06 11:36:53,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:53,557 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:53,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-06 11:36:53,557 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash 814689524, now seen corresponding path program 14 times [2021-05-06 11:36:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:53,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687240018] [2021-05-06 11:36:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:53,563 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:53,563 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:53,564 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-06 11:36:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:36:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:36:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:36:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:36:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:36:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:36:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:53,862 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:53,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687240018] [2021-05-06 11:36:53,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687240018] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:53,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:53,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-06 11:36:53,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302926508] [2021-05-06 11:36:53,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 11:36:53,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:53,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 11:36:53,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2021-05-06 11:36:53,864 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:54,520 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-05-06 11:36:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-06 11:36:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 86 [2021-05-06 11:36:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:54,521 INFO L225 Difference]: With dead ends: 102 [2021-05-06 11:36:54,521 INFO L226 Difference]: Without dead ends: 100 [2021-05-06 11:36:54,521 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 392.2ms TimeCoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 11:36:54,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-06 11:36:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2021-05-06 11:36:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-05-06 11:36:54,537 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 86 [2021-05-06 11:36:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:54,537 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-05-06 11:36:54,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:36:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-05-06 11:36:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-06 11:36:54,538 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:54,538 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:54,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-06 11:36:54,538 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:54,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1169596722, now seen corresponding path program 15 times [2021-05-06 11:36:54,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:54,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725668645] [2021-05-06 11:36:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:54,544 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:54,544 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:54,545 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-06 11:36:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:36:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:36:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:36:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:36:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:36:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:36:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:36:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:54,739 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:54,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725668645] [2021-05-06 11:36:54,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1725668645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:54,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:54,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-06 11:36:54,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60771371] [2021-05-06 11:36:54,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 11:36:54,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 11:36:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:36:54,741 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:54,984 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2021-05-06 11:36:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 11:36:54,985 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 94 [2021-05-06 11:36:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:54,986 INFO L225 Difference]: With dead ends: 144 [2021-05-06 11:36:54,986 INFO L226 Difference]: Without dead ends: 100 [2021-05-06 11:36:54,988 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 230.6ms TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:36:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-06 11:36:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-05-06 11:36:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-05-06 11:36:54,998 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2021-05-06 11:36:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:54,998 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-05-06 11:36:54,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-05-06 11:36:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-06 11:36:54,999 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:54,999 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:54,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-06 11:36:54,999 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:54,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1315000236, now seen corresponding path program 16 times [2021-05-06 11:36:55,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:55,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034597950] [2021-05-06 11:36:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:55,003 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:55,003 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:55,004 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-06 11:36:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:36:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:36:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:36:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:36:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:36:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:36:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:36:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:55,332 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:55,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034597950] [2021-05-06 11:36:55,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1034597950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:55,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:55,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-06 11:36:55,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905846345] [2021-05-06 11:36:55,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 11:36:55,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:55,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 11:36:55,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:36:55,333 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:56,079 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2021-05-06 11:36:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 11:36:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 96 [2021-05-06 11:36:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:56,081 INFO L225 Difference]: With dead ends: 112 [2021-05-06 11:36:56,081 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 11:36:56,081 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 470.0ms TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:36:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 11:36:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-05-06 11:36:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-05-06 11:36:56,088 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 96 [2021-05-06 11:36:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:56,088 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-05-06 11:36:56,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:36:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-05-06 11:36:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-06 11:36:56,089 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:56,089 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:56,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-06 11:36:56,089 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:56,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1911993978, now seen corresponding path program 17 times [2021-05-06 11:36:56,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:56,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423315665] [2021-05-06 11:36:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:56,093 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:56,093 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:56,094 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-06 11:36:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:36:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:36:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:36:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:36:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:36:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:36:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:36:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:36:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:56,462 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:56,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423315665] [2021-05-06 11:36:56,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1423315665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:56,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:56,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-06 11:36:56,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590021353] [2021-05-06 11:36:56,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 11:36:56,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 11:36:56,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-05-06 11:36:56,463 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:56,745 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2021-05-06 11:36:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 11:36:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 104 [2021-05-06 11:36:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:56,746 INFO L225 Difference]: With dead ends: 158 [2021-05-06 11:36:56,746 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 11:36:56,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 419.8ms TimeCoverageRelationStatistics Valid=263, Invalid=927, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 11:36:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 11:36:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-05-06 11:36:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2021-05-06 11:36:56,756 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 104 [2021-05-06 11:36:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:56,756 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2021-05-06 11:36:56,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2021-05-06 11:36:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-05-06 11:36:56,758 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:56,758 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:56,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-06 11:36:56,758 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:56,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1220002588, now seen corresponding path program 18 times [2021-05-06 11:36:56,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:56,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834090251] [2021-05-06 11:36:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:56,763 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:56,763 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:56,763 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-06 11:36:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:36:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:36:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:36:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:36:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:36:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:36:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:36:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:36:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:57,140 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:57,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834090251] [2021-05-06 11:36:57,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834090251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:57,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:57,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-06 11:36:57,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096741370] [2021-05-06 11:36:57,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 11:36:57,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 11:36:57,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2021-05-06 11:36:57,142 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 26 states have internal predecessors, (60), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:57,930 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-05-06 11:36:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 11:36:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 26 states have internal predecessors, (60), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 106 [2021-05-06 11:36:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:57,931 INFO L225 Difference]: With dead ends: 122 [2021-05-06 11:36:57,931 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 11:36:57,932 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 491.0ms TimeCoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 11:36:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 11:36:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-05-06 11:36:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.021978021978022) internal successors, (93), 92 states have internal predecessors, (93), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:36:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2021-05-06 11:36:57,942 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 106 [2021-05-06 11:36:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:57,942 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2021-05-06 11:36:57,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 26 states have internal predecessors, (60), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:36:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2021-05-06 11:36:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-06 11:36:57,943 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:57,943 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:57,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-06 11:36:57,943 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2058059454, now seen corresponding path program 19 times [2021-05-06 11:36:57,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:57,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911208144] [2021-05-06 11:36:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:57,947 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:57,947 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:57,948 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-05-06 11:36:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:36:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:36:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:36:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:36:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:36:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:36:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:36:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:36:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:36:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:58,181 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:58,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911208144] [2021-05-06 11:36:58,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [911208144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:58,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:58,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-06 11:36:58,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318496250] [2021-05-06 11:36:58,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 11:36:58,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:58,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 11:36:58,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:36:58,183 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:58,575 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2021-05-06 11:36:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 11:36:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 114 [2021-05-06 11:36:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:58,577 INFO L225 Difference]: With dead ends: 172 [2021-05-06 11:36:58,577 INFO L226 Difference]: Without dead ends: 120 [2021-05-06 11:36:58,578 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 302.6ms TimeCoverageRelationStatistics Valid=310, Invalid=1096, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:36:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-06 11:36:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-05-06 11:36:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:36:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-05-06 11:36:58,586 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2021-05-06 11:36:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:58,586 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-05-06 11:36:58,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-05-06 11:36:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-06 11:36:58,587 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:58,587 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:58,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-06 11:36:58,587 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1880118428, now seen corresponding path program 20 times [2021-05-06 11:36:58,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:58,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545327811] [2021-05-06 11:36:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:58,592 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:58,592 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:58,592 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 11:36:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:36:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:36:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:36:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:36:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:36:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:36:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:36:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:36:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:36:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:59,006 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:59,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545327811] [2021-05-06 11:36:59,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [545327811] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:59,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:59,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-06 11:36:59,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499983517] [2021-05-06 11:36:59,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 11:36:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 11:36:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2021-05-06 11:36:59,007 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:59,982 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-05-06 11:36:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 11:36:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 116 [2021-05-06 11:36:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:59,985 INFO L225 Difference]: With dead ends: 132 [2021-05-06 11:36:59,985 INFO L226 Difference]: Without dead ends: 130 [2021-05-06 11:36:59,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 572.0ms TimeCoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:36:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-06 11:36:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2021-05-06 11:36:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:36:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2021-05-06 11:36:59,994 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 116 [2021-05-06 11:36:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:59,994 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2021-05-06 11:36:59,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:36:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2021-05-06 11:36:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-05-06 11:36:59,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:59,995 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:59,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-06 11:36:59,995 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:59,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1566810506, now seen corresponding path program 21 times [2021-05-06 11:36:59,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:59,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971439506] [2021-05-06 11:36:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:59,998 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:59,998 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:59,999 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-06 11:37:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:37:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:37:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:00,234 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:00,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971439506] [2021-05-06 11:37:00,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971439506] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:00,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:00,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-06 11:37:00,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027815093] [2021-05-06 11:37:00,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 11:37:00,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:00,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 11:37:00,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-05-06 11:37:00,236 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:37:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:00,673 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2021-05-06 11:37:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-06 11:37:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 124 [2021-05-06 11:37:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:00,674 INFO L225 Difference]: With dead ends: 186 [2021-05-06 11:37:00,674 INFO L226 Difference]: Without dead ends: 130 [2021-05-06 11:37:00,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=361, Invalid=1279, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 11:37:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-06 11:37:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-05-06 11:37:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:37:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2021-05-06 11:37:00,684 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 124 [2021-05-06 11:37:00,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:00,685 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2021-05-06 11:37:00,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 27 states have internal predecessors, (68), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:37:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2021-05-06 11:37:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-05-06 11:37:00,685 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:00,685 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:00,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-06 11:37:00,686 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1844578604, now seen corresponding path program 22 times [2021-05-06 11:37:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:00,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594516893] [2021-05-06 11:37:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:00,689 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:00,689 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:00,690 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:37:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:37:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:01,133 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:01,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594516893] [2021-05-06 11:37:01,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [594516893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:01,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:01,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-06 11:37:01,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959989064] [2021-05-06 11:37:01,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 11:37:01,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:01,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 11:37:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=928, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:37:01,134 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:37:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:02,208 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2021-05-06 11:37:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 11:37:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 126 [2021-05-06 11:37:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:02,209 INFO L225 Difference]: With dead ends: 142 [2021-05-06 11:37:02,209 INFO L226 Difference]: Without dead ends: 140 [2021-05-06 11:37:02,210 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 631.3ms TimeCoverageRelationStatistics Valid=129, Invalid=2033, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 11:37:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-06 11:37:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2021-05-06 11:37:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2021-05-06 11:37:02,220 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 126 [2021-05-06 11:37:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:02,220 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2021-05-06 11:37:02,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:37:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2021-05-06 11:37:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-05-06 11:37:02,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:02,221 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:02,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-06 11:37:02,221 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 886065326, now seen corresponding path program 23 times [2021-05-06 11:37:02,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:02,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954574870] [2021-05-06 11:37:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:02,225 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:02,225 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:02,225 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-05-06 11:37:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:37:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:02,511 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:02,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954574870] [2021-05-06 11:37:02,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954574870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:02,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:02,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-06 11:37:02,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300154035] [2021-05-06 11:37:02,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 11:37:02,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:02,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 11:37:02,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-05-06 11:37:02,513 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:37:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:03,006 INFO L93 Difference]: Finished difference Result 200 states and 214 transitions. [2021-05-06 11:37:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 11:37:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 134 [2021-05-06 11:37:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:03,007 INFO L225 Difference]: With dead ends: 200 [2021-05-06 11:37:03,007 INFO L226 Difference]: Without dead ends: 140 [2021-05-06 11:37:03,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 381.7ms TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:37:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-06 11:37:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2021-05-06 11:37:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 109 states have (on average 1.018348623853211) internal successors, (111), 110 states have internal predecessors, (111), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2021-05-06 11:37:03,018 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2021-05-06 11:37:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:03,018 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2021-05-06 11:37:03,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:37:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2021-05-06 11:37:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-05-06 11:37:03,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:03,019 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:03,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-06 11:37:03,019 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1055030388, now seen corresponding path program 24 times [2021-05-06 11:37:03,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:03,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084265329] [2021-05-06 11:37:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:03,022 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:03,022 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:03,023 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:37:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:37:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:03,680 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:03,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084265329] [2021-05-06 11:37:03,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2084265329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:03,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:03,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-06 11:37:03,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599958130] [2021-05-06 11:37:03,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 11:37:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 11:37:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 11:37:03,681 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:37:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:04,670 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2021-05-06 11:37:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 11:37:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 136 [2021-05-06 11:37:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:04,672 INFO L225 Difference]: With dead ends: 152 [2021-05-06 11:37:04,672 INFO L226 Difference]: Without dead ends: 150 [2021-05-06 11:37:04,672 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 625.6ms TimeCoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:37:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-06 11:37:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2021-05-06 11:37:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2021-05-06 11:37:04,683 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 136 [2021-05-06 11:37:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:04,683 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2021-05-06 11:37:04,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:37:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2021-05-06 11:37:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-05-06 11:37:04,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:04,684 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:04,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-06 11:37:04,684 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -490496666, now seen corresponding path program 25 times [2021-05-06 11:37:04,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:04,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273879548] [2021-05-06 11:37:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:04,688 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:04,689 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:04,689 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-06 11:37:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:37:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:04,996 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:04,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273879548] [2021-05-06 11:37:04,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1273879548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:04,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:04,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-06 11:37:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049246844] [2021-05-06 11:37:04,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 11:37:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 11:37:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:37:04,998 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:05,586 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-05-06 11:37:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 11:37:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 144 [2021-05-06 11:37:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:05,587 INFO L225 Difference]: With dead ends: 214 [2021-05-06 11:37:05,587 INFO L226 Difference]: Without dead ends: 150 [2021-05-06 11:37:05,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 452.8ms TimeCoverageRelationStatistics Valid=475, Invalid=1687, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 11:37:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-06 11:37:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-05-06 11:37:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2021-05-06 11:37:05,602 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 144 [2021-05-06 11:37:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:05,603 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2021-05-06 11:37:05,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2021-05-06 11:37:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-05-06 11:37:05,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:05,604 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:05,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-06 11:37:05,604 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 564353732, now seen corresponding path program 26 times [2021-05-06 11:37:05,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:05,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376022078] [2021-05-06 11:37:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:05,608 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:05,608 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:05,609 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:37:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:37:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:06,199 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:06,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376022078] [2021-05-06 11:37:06,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1376022078] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:06,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:06,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-06 11:37:06,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184483246] [2021-05-06 11:37:06,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 11:37:06,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 11:37:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1188, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 11:37:06,200 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 36 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:07,598 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2021-05-06 11:37:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-06 11:37:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 146 [2021-05-06 11:37:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:07,599 INFO L225 Difference]: With dead ends: 162 [2021-05-06 11:37:07,599 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 11:37:07,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 807.3ms TimeCoverageRelationStatistics Valid=145, Invalid=2611, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 11:37:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 11:37:07,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2021-05-06 11:37:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2021-05-06 11:37:07,614 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 146 [2021-05-06 11:37:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:07,614 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2021-05-06 11:37:07,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:37:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2021-05-06 11:37:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-06 11:37:07,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:07,615 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:07,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-06 11:37:07,615 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:07,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:07,615 INFO L82 PathProgramCache]: Analyzing trace with hash -696599394, now seen corresponding path program 27 times [2021-05-06 11:37:07,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:07,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128495692] [2021-05-06 11:37:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:07,618 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:07,618 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:07,619 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-06 11:37:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:37:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:37:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:07,971 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:07,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128495692] [2021-05-06 11:37:07,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [128495692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:07,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:07,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-06 11:37:07,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131954399] [2021-05-06 11:37:07,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 11:37:07,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 11:37:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 11:37:07,972 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 states have internal predecessors, (83), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:08,599 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2021-05-06 11:37:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-06 11:37:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 states have internal predecessors, (83), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 154 [2021-05-06 11:37:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:08,601 INFO L225 Difference]: With dead ends: 228 [2021-05-06 11:37:08,601 INFO L226 Difference]: Without dead ends: 160 [2021-05-06 11:37:08,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 479.8ms TimeCoverageRelationStatistics Valid=538, Invalid=1912, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 11:37:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-06 11:37:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-05-06 11:37:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2021-05-06 11:37:08,615 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2021-05-06 11:37:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:08,615 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2021-05-06 11:37:08,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 33 states have internal predecessors, (83), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2021-05-06 11:37:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-05-06 11:37:08,616 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:08,616 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:08,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-06 11:37:08,616 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:08,617 INFO L82 PathProgramCache]: Analyzing trace with hash -829694852, now seen corresponding path program 28 times [2021-05-06 11:37:08,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:08,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242018526] [2021-05-06 11:37:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:08,619 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:08,620 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:08,620 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:37:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:37:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:09,261 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:09,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242018526] [2021-05-06 11:37:09,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [242018526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:09,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:09,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-06 11:37:09,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726772768] [2021-05-06 11:37:09,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 11:37:09,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 11:37:09,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1330, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:37:09,263 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 38 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:10,783 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2021-05-06 11:37:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 11:37:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 156 [2021-05-06 11:37:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:10,784 INFO L225 Difference]: With dead ends: 172 [2021-05-06 11:37:10,784 INFO L226 Difference]: Without dead ends: 170 [2021-05-06 11:37:10,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 884.9ms TimeCoverageRelationStatistics Valid=153, Invalid=2927, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:37:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-06 11:37:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-05-06 11:37:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2021-05-06 11:37:10,798 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 156 [2021-05-06 11:37:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:10,798 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2021-05-06 11:37:10,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 36 states have internal predecessors, (85), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:37:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2021-05-06 11:37:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-05-06 11:37:10,799 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:10,799 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:10,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-06 11:37:10,799 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash 679609942, now seen corresponding path program 29 times [2021-05-06 11:37:10,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:10,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984424367] [2021-05-06 11:37:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:10,802 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:10,802 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:10,803 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-06 11:37:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:37:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:37:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:11,176 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:11,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984424367] [2021-05-06 11:37:11,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984424367] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:11,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:11,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-06 11:37:11,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474148324] [2021-05-06 11:37:11,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 11:37:11,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:11,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 11:37:11,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 11:37:11,178 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:11,835 INFO L93 Difference]: Finished difference Result 242 states and 259 transitions. [2021-05-06 11:37:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 11:37:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 164 [2021-05-06 11:37:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:11,837 INFO L225 Difference]: With dead ends: 242 [2021-05-06 11:37:11,837 INFO L226 Difference]: Without dead ends: 170 [2021-05-06 11:37:11,838 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 554.7ms TimeCoverageRelationStatistics Valid=605, Invalid=2151, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 11:37:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-06 11:37:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2021-05-06 11:37:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 134 states have internal predecessors, (135), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2021-05-06 11:37:11,854 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 164 [2021-05-06 11:37:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:11,854 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2021-05-06 11:37:11,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2021-05-06 11:37:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-05-06 11:37:11,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:11,855 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:11,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-06 11:37:11,856 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash -817141580, now seen corresponding path program 30 times [2021-05-06 11:37:11,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:11,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269426339] [2021-05-06 11:37:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:11,859 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:11,859 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:11,861 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:37:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:12,584 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:12,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269426339] [2021-05-06 11:37:12,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [269426339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:12,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:12,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-06 11:37:12,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366495007] [2021-05-06 11:37:12,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 11:37:12,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:12,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 11:37:12,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1480, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 11:37:12,585 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 40 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 38 states have internal predecessors, (90), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:14,207 INFO L93 Difference]: Finished difference Result 182 states and 183 transitions. [2021-05-06 11:37:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 11:37:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 38 states have internal predecessors, (90), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 166 [2021-05-06 11:37:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:14,208 INFO L225 Difference]: With dead ends: 182 [2021-05-06 11:37:14,208 INFO L226 Difference]: Without dead ends: 180 [2021-05-06 11:37:14,209 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1007.9ms TimeCoverageRelationStatistics Valid=161, Invalid=3261, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 11:37:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-06 11:37:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2021-05-06 11:37:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 139 states have (on average 1.014388489208633) internal successors, (141), 140 states have internal predecessors, (141), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2021-05-06 11:37:14,225 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 166 [2021-05-06 11:37:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:14,226 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2021-05-06 11:37:14,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 38 states have internal predecessors, (90), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:37:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2021-05-06 11:37:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-05-06 11:37:14,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:14,227 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:14,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-06 11:37:14,227 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash -705832306, now seen corresponding path program 31 times [2021-05-06 11:37:14,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:14,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360615209] [2021-05-06 11:37:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:14,231 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:14,231 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:14,231 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-06 11:37:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:37:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:14,648 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:14,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360615209] [2021-05-06 11:37:14,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [360615209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:14,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:14,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-06 11:37:14,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874453917] [2021-05-06 11:37:14,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 11:37:14,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:14,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 11:37:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:37:14,649 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 37 states have internal predecessors, (93), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:15,456 INFO L93 Difference]: Finished difference Result 256 states and 274 transitions. [2021-05-06 11:37:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 11:37:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 37 states have internal predecessors, (93), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 174 [2021-05-06 11:37:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:15,457 INFO L225 Difference]: With dead ends: 256 [2021-05-06 11:37:15,457 INFO L226 Difference]: Without dead ends: 180 [2021-05-06 11:37:15,458 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 623.8ms TimeCoverageRelationStatistics Valid=676, Invalid=2404, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:37:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-06 11:37:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-05-06 11:37:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2021-05-06 11:37:15,473 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 174 [2021-05-06 11:37:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:15,473 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2021-05-06 11:37:15,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 37 states have internal predecessors, (93), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2021-05-06 11:37:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-05-06 11:37:15,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:15,474 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:15,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-06 11:37:15,474 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1914806420, now seen corresponding path program 32 times [2021-05-06 11:37:15,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:15,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017490954] [2021-05-06 11:37:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:15,477 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:15,477 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:15,478 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:37:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:37:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:37:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:37:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:37:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:16,228 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:16,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017490954] [2021-05-06 11:37:16,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1017490954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:16,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:16,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-06 11:37:16,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080587261] [2021-05-06 11:37:16,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 11:37:16,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 11:37:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1638, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 11:37:16,230 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:17,988 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2021-05-06 11:37:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 11:37:17,988 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 176 [2021-05-06 11:37:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:17,989 INFO L225 Difference]: With dead ends: 192 [2021-05-06 11:37:17,989 INFO L226 Difference]: Without dead ends: 190 [2021-05-06 11:37:17,990 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1051.3ms TimeCoverageRelationStatistics Valid=169, Invalid=3613, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:37:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-06 11:37:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2021-05-06 11:37:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2021-05-06 11:37:18,005 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 176 [2021-05-06 11:37:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:18,005 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2021-05-06 11:37:18,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:37:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2021-05-06 11:37:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-05-06 11:37:18,006 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:18,006 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:18,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-06 11:37:18,006 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash 911907142, now seen corresponding path program 33 times [2021-05-06 11:37:18,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:18,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923657147] [2021-05-06 11:37:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:18,009 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:18,009 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:18,010 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-06 11:37:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:37:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:37:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:37:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:37:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:37:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:18,488 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:18,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923657147] [2021-05-06 11:37:18,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923657147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:18,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:18,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-06 11:37:18,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323742730] [2021-05-06 11:37:18,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 11:37:18,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 11:37:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 11:37:18,489 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:19,327 INFO L93 Difference]: Finished difference Result 270 states and 289 transitions. [2021-05-06 11:37:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-06 11:37:19,328 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 184 [2021-05-06 11:37:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:19,329 INFO L225 Difference]: With dead ends: 270 [2021-05-06 11:37:19,329 INFO L226 Difference]: Without dead ends: 190 [2021-05-06 11:37:19,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 705.2ms TimeCoverageRelationStatistics Valid=751, Invalid=2671, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 11:37:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-06 11:37:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2021-05-06 11:37:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2021-05-06 11:37:19,347 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 184 [2021-05-06 11:37:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:19,347 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2021-05-06 11:37:19,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 states have internal predecessors, (98), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2021-05-06 11:37:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-05-06 11:37:19,348 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:19,348 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:19,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-06 11:37:19,348 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash -859234140, now seen corresponding path program 34 times [2021-05-06 11:37:19,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:19,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45625290] [2021-05-06 11:37:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:19,352 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:19,352 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:19,353 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:37:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:37:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:37:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:37:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:37:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:37:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:20,175 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:20,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45625290] [2021-05-06 11:37:20,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [45625290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:20,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:20,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-06 11:37:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205044821] [2021-05-06 11:37:20,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 11:37:20,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:20,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 11:37:20,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1804, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:37:20,176 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:22,200 INFO L93 Difference]: Finished difference Result 202 states and 203 transitions. [2021-05-06 11:37:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 11:37:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 186 [2021-05-06 11:37:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:22,201 INFO L225 Difference]: With dead ends: 202 [2021-05-06 11:37:22,201 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 11:37:22,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1214.1ms TimeCoverageRelationStatistics Valid=177, Invalid=3983, Unknown=0, NotChecked=0, Total=4160 [2021-05-06 11:37:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 11:37:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2021-05-06 11:37:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2021-05-06 11:37:22,217 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 186 [2021-05-06 11:37:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:22,217 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2021-05-06 11:37:22,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 42 states have internal predecessors, (100), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:37:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2021-05-06 11:37:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-06 11:37:22,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:22,218 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:22,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-06 11:37:22,218 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:22,219 INFO L82 PathProgramCache]: Analyzing trace with hash -236150146, now seen corresponding path program 35 times [2021-05-06 11:37:22,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:22,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275971479] [2021-05-06 11:37:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:22,222 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:22,222 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:22,222 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-06 11:37:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:37:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:37:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:37:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:37:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:37:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:37:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:22,737 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:22,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275971479] [2021-05-06 11:37:22,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [275971479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:22,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:22,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-06 11:37:22,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125674230] [2021-05-06 11:37:22,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 11:37:22,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:22,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 11:37:22,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 11:37:22,739 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 41 states have internal predecessors, (103), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:23,489 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions. [2021-05-06 11:37:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 11:37:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 41 states have internal predecessors, (103), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 194 [2021-05-06 11:37:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:23,490 INFO L225 Difference]: With dead ends: 284 [2021-05-06 11:37:23,490 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 11:37:23,491 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 750.3ms TimeCoverageRelationStatistics Valid=830, Invalid=2952, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:37:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 11:37:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-05-06 11:37:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 158 states have internal predecessors, (159), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2021-05-06 11:37:23,511 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 194 [2021-05-06 11:37:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:23,511 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2021-05-06 11:37:23,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 41 states have internal predecessors, (103), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2021-05-06 11:37:23,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-05-06 11:37:23,512 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:23,512 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:23,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-06 11:37:23,512 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash 488115292, now seen corresponding path program 36 times [2021-05-06 11:37:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:23,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819333019] [2021-05-06 11:37:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:23,516 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:23,516 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:23,517 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:37:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:37:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:37:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:37:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:37:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:37:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:24,434 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:24,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819333019] [2021-05-06 11:37:24,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [819333019] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:24,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:24,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-06 11:37:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948343022] [2021-05-06 11:37:24,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 11:37:24,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 11:37:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1978, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 11:37:24,435 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 44 states have internal predecessors, (105), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:26,554 INFO L93 Difference]: Finished difference Result 212 states and 213 transitions. [2021-05-06 11:37:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 11:37:26,554 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 44 states have internal predecessors, (105), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 196 [2021-05-06 11:37:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:26,555 INFO L225 Difference]: With dead ends: 212 [2021-05-06 11:37:26,555 INFO L226 Difference]: Without dead ends: 210 [2021-05-06 11:37:26,556 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1299.9ms TimeCoverageRelationStatistics Valid=185, Invalid=4371, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:37:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-06 11:37:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2021-05-06 11:37:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 164 states have internal predecessors, (165), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2021-05-06 11:37:26,576 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 196 [2021-05-06 11:37:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:26,577 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2021-05-06 11:37:26,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 44 states have internal predecessors, (105), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:37:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2021-05-06 11:37:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-05-06 11:37:26,577 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:26,578 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:26,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-06 11:37:26,578 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2001753654, now seen corresponding path program 37 times [2021-05-06 11:37:26,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:26,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262827957] [2021-05-06 11:37:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:26,581 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:26,581 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:26,582 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-06 11:37:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:37:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:37:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:37:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:37:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:37:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:37:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:27,107 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:27,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262827957] [2021-05-06 11:37:27,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262827957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:27,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:27,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-06 11:37:27,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770841885] [2021-05-06 11:37:27,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 11:37:27,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:27,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 11:37:27,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:37:27,109 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:28,077 INFO L93 Difference]: Finished difference Result 298 states and 319 transitions. [2021-05-06 11:37:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 11:37:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 204 [2021-05-06 11:37:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:28,078 INFO L225 Difference]: With dead ends: 298 [2021-05-06 11:37:28,078 INFO L226 Difference]: Without dead ends: 210 [2021-05-06 11:37:28,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 807.1ms TimeCoverageRelationStatistics Valid=913, Invalid=3247, Unknown=0, NotChecked=0, Total=4160 [2021-05-06 11:37:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-06 11:37:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-05-06 11:37:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2021-05-06 11:37:28,098 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 204 [2021-05-06 11:37:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:28,098 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2021-05-06 11:37:28,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 43 states have internal predecessors, (108), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2021-05-06 11:37:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-05-06 11:37:28,099 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:28,099 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:28,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-06 11:37:28,099 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash -731938156, now seen corresponding path program 38 times [2021-05-06 11:37:28,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:28,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656829280] [2021-05-06 11:37:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:28,102 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:28,102 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:28,103 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:37:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:37:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:37:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:37:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:37:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:29,065 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:29,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656829280] [2021-05-06 11:37:29,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1656829280] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:29,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:29,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-06 11:37:29,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164062001] [2021-05-06 11:37:29,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 11:37:29,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 11:37:29,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2160, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 11:37:29,066 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:31,352 INFO L93 Difference]: Finished difference Result 222 states and 223 transitions. [2021-05-06 11:37:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-06 11:37:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 206 [2021-05-06 11:37:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:31,354 INFO L225 Difference]: With dead ends: 222 [2021-05-06 11:37:31,354 INFO L226 Difference]: Without dead ends: 220 [2021-05-06 11:37:31,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1378.7ms TimeCoverageRelationStatistics Valid=193, Invalid=4777, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 11:37:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-06 11:37:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2021-05-06 11:37:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2021-05-06 11:37:31,373 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 206 [2021-05-06 11:37:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:31,373 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2021-05-06 11:37:31,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 states have internal predecessors, (110), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:37:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2021-05-06 11:37:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-05-06 11:37:31,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:31,374 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:31,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-06 11:37:31,374 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash -239463314, now seen corresponding path program 39 times [2021-05-06 11:37:31,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:31,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507320535] [2021-05-06 11:37:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:31,377 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:31,377 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:31,378 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-06 11:37:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:37:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:37:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:37:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:37:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:37:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:37:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:31,977 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:31,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507320535] [2021-05-06 11:37:31,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1507320535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:31,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:31,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-06 11:37:31,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636904398] [2021-05-06 11:37:31,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 11:37:31,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:31,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 11:37:31,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 11:37:31,978 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:32,849 INFO L93 Difference]: Finished difference Result 312 states and 334 transitions. [2021-05-06 11:37:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 11:37:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 214 [2021-05-06 11:37:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:32,850 INFO L225 Difference]: With dead ends: 312 [2021-05-06 11:37:32,850 INFO L226 Difference]: Without dead ends: 220 [2021-05-06 11:37:32,851 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 855.0ms TimeCoverageRelationStatistics Valid=1000, Invalid=3556, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:37:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-06 11:37:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-05-06 11:37:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 174 states have internal predecessors, (175), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2021-05-06 11:37:32,870 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2021-05-06 11:37:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:32,870 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2021-05-06 11:37:32,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2021-05-06 11:37:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-05-06 11:37:32,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:32,871 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:32,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-06 11:37:32,872 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2101615796, now seen corresponding path program 40 times [2021-05-06 11:37:32,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:32,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567326228] [2021-05-06 11:37:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:32,875 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:32,875 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:32,875 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:37:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:37:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:37:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:37:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:37:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:37:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:37:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:37:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:37:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:33,941 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:33,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567326228] [2021-05-06 11:37:33,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1567326228] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:33,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:33,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-06 11:37:33,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842463553] [2021-05-06 11:37:33,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 11:37:33,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:33,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 11:37:33,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2350, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 11:37:33,942 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 50 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 48 states have internal predecessors, (115), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:36,492 INFO L93 Difference]: Finished difference Result 232 states and 233 transitions. [2021-05-06 11:37:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 11:37:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 48 states have internal predecessors, (115), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 216 [2021-05-06 11:37:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:36,494 INFO L225 Difference]: With dead ends: 232 [2021-05-06 11:37:36,494 INFO L226 Difference]: Without dead ends: 230 [2021-05-06 11:37:36,494 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1520.6ms TimeCoverageRelationStatistics Valid=201, Invalid=5201, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:37:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-06 11:37:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2021-05-06 11:37:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 179 states have (on average 1.011173184357542) internal successors, (181), 180 states have internal predecessors, (181), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2021-05-06 11:37:36,514 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 216 [2021-05-06 11:37:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:36,514 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2021-05-06 11:37:36,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 48 states have internal predecessors, (115), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:37:36,514 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2021-05-06 11:37:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-05-06 11:37:36,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:36,519 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:36,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-06 11:37:36,519 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1092207322, now seen corresponding path program 41 times [2021-05-06 11:37:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:36,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071148835] [2021-05-06 11:37:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:36,522 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:36,522 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:36,523 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-06 11:37:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:37:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:37:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:37:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:37:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:37:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:37:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:37:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:37:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:37:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:37:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:37,147 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:37,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071148835] [2021-05-06 11:37:37,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071148835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:37,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:37,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-06 11:37:37,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156557916] [2021-05-06 11:37:37,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 11:37:37,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 11:37:37,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 11:37:37,148 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand has 48 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 47 states have internal predecessors, (118), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:38,259 INFO L93 Difference]: Finished difference Result 326 states and 349 transitions. [2021-05-06 11:37:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 11:37:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 47 states have internal predecessors, (118), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 224 [2021-05-06 11:37:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:38,260 INFO L225 Difference]: With dead ends: 326 [2021-05-06 11:37:38,260 INFO L226 Difference]: Without dead ends: 230 [2021-05-06 11:37:38,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 936.9ms TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 11:37:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-06 11:37:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2021-05-06 11:37:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 181 states have (on average 1.011049723756906) internal successors, (183), 182 states have internal predecessors, (183), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2021-05-06 11:37:38,282 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 224 [2021-05-06 11:37:38,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:38,283 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2021-05-06 11:37:38,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 47 states have internal predecessors, (118), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:38,283 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2021-05-06 11:37:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-05-06 11:37:38,284 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:38,284 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:38,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-06 11:37:38,284 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -388919676, now seen corresponding path program 42 times [2021-05-06 11:37:38,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:38,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565876643] [2021-05-06 11:37:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:38,288 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:38,288 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:38,289 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:37:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:37:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:37:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:37:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:37:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:37:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:37:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:37:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:37:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:37:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:39,413 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:39,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565876643] [2021-05-06 11:37:39,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1565876643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:39,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:39,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-06 11:37:39,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399115288] [2021-05-06 11:37:39,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 11:37:39,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:39,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 11:37:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2548, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 11:37:39,414 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand has 52 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 50 states have internal predecessors, (120), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:42,219 INFO L93 Difference]: Finished difference Result 242 states and 243 transitions. [2021-05-06 11:37:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 11:37:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 50 states have internal predecessors, (120), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 226 [2021-05-06 11:37:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:42,221 INFO L225 Difference]: With dead ends: 242 [2021-05-06 11:37:42,221 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 11:37:42,221 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1638.7ms TimeCoverageRelationStatistics Valid=209, Invalid=5643, Unknown=0, NotChecked=0, Total=5852 [2021-05-06 11:37:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 11:37:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 237. [2021-05-06 11:37:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 188 states have internal predecessors, (189), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2021-05-06 11:37:42,243 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 226 [2021-05-06 11:37:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:42,243 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2021-05-06 11:37:42,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 50 states have internal predecessors, (120), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:37:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2021-05-06 11:37:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-05-06 11:37:42,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:42,244 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:42,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-06 11:37:42,244 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1696149598, now seen corresponding path program 43 times [2021-05-06 11:37:42,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:42,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378245517] [2021-05-06 11:37:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:42,252 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:42,253 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:42,253 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-06 11:37:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:37:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:37:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:37:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:37:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:37:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:37:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:37:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:37:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:37:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:37:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:37:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:37:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:37:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:37:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:37:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:37:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:37:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:37:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:37:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:37:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:37:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:42,941 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:42,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378245517] [2021-05-06 11:37:42,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1378245517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:42,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:42,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-06 11:37:42,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744932322] [2021-05-06 11:37:42,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 11:37:42,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 11:37:42,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1868, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 11:37:42,942 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand has 50 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:44,189 INFO L93 Difference]: Finished difference Result 340 states and 364 transitions. [2021-05-06 11:37:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 11:37:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 234 [2021-05-06 11:37:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:44,190 INFO L225 Difference]: With dead ends: 340 [2021-05-06 11:37:44,190 INFO L226 Difference]: Without dead ends: 240 [2021-05-06 11:37:44,191 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1023.7ms TimeCoverageRelationStatistics Valid=1186, Invalid=4216, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:37:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-06 11:37:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-05-06 11:37:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2021-05-06 11:37:44,215 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 234 [2021-05-06 11:37:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:44,215 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2021-05-06 11:37:44,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2021-05-06 11:37:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-05-06 11:37:44,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:44,216 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:44,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-06 11:37:44,216 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:44,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1842144316, now seen corresponding path program 44 times [2021-05-06 11:37:44,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:44,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56729339] [2021-05-06 11:37:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:44,220 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:44,220 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:44,221 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:37:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:37:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:37:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:37:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:37:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:37:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:37:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:37:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:37:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:37:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:45,431 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:45,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56729339] [2021-05-06 11:37:45,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [56729339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:45,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:45,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-06 11:37:45,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406348006] [2021-05-06 11:37:45,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 11:37:45,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 11:37:45,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2754, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 11:37:45,433 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 54 states, 53 states have (on average 2.358490566037736) internal successors, (125), 52 states have internal predecessors, (125), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:48,436 INFO L93 Difference]: Finished difference Result 252 states and 253 transitions. [2021-05-06 11:37:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 11:37:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.358490566037736) internal successors, (125), 52 states have internal predecessors, (125), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 236 [2021-05-06 11:37:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:48,437 INFO L225 Difference]: With dead ends: 252 [2021-05-06 11:37:48,437 INFO L226 Difference]: Without dead ends: 250 [2021-05-06 11:37:48,438 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1778.1ms TimeCoverageRelationStatistics Valid=217, Invalid=6103, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:37:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-06 11:37:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-05-06 11:37:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:37:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2021-05-06 11:37:48,461 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 236 [2021-05-06 11:37:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:48,461 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2021-05-06 11:37:48,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 53 states have (on average 2.358490566037736) internal successors, (125), 52 states have internal predecessors, (125), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:37:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2021-05-06 11:37:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-05-06 11:37:48,466 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:48,466 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:48,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-06 11:37:48,467 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash 153046550, now seen corresponding path program 45 times [2021-05-06 11:37:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:48,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61115639] [2021-05-06 11:37:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:48,470 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:48,470 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:48,471 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-06 11:37:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:37:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:37:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:37:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:37:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:37:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:37:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:37:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:37:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:37:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:37:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:37:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:37:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:37:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:37:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:37:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:37:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:37:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:37:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:37:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:37:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:37:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:37:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:49,217 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:49,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61115639] [2021-05-06 11:37:49,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [61115639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:49,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:49,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-06 11:37:49,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12450040] [2021-05-06 11:37:49,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 11:37:49,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 11:37:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 11:37:49,218 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 52 states, 52 states have (on average 2.4615384615384617) internal successors, (128), 51 states have internal predecessors, (128), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:50,507 INFO L93 Difference]: Finished difference Result 354 states and 379 transitions. [2021-05-06 11:37:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-06 11:37:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.4615384615384617) internal successors, (128), 51 states have internal predecessors, (128), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 244 [2021-05-06 11:37:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:50,509 INFO L225 Difference]: With dead ends: 354 [2021-05-06 11:37:50,509 INFO L226 Difference]: Without dead ends: 250 [2021-05-06 11:37:50,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1116.9ms TimeCoverageRelationStatistics Valid=1285, Invalid=4567, Unknown=0, NotChecked=0, Total=5852 [2021-05-06 11:37:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-06 11:37:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-05-06 11:37:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:37:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2021-05-06 11:37:50,534 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 244 [2021-05-06 11:37:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:50,534 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2021-05-06 11:37:50,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.4615384615384617) internal successors, (128), 51 states have internal predecessors, (128), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2021-05-06 11:37:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-05-06 11:37:50,535 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:50,535 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:50,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-06 11:37:50,535 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash 358761588, now seen corresponding path program 46 times [2021-05-06 11:37:50,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:50,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802946712] [2021-05-06 11:37:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:50,539 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:50,539 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:50,540 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:37:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:37:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:37:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:37:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:37:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:37:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:37:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:37:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:37:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:37:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:51,829 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:51,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802946712] [2021-05-06 11:37:51,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1802946712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:51,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:51,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-06 11:37:51,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753881308] [2021-05-06 11:37:51,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-06 11:37:51,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-06 11:37:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=2968, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:37:51,830 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 54 states have internal predecessors, (130), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:55,033 INFO L93 Difference]: Finished difference Result 262 states and 263 transitions. [2021-05-06 11:37:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 11:37:55,034 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 54 states have internal predecessors, (130), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 246 [2021-05-06 11:37:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:55,034 INFO L225 Difference]: With dead ends: 262 [2021-05-06 11:37:55,034 INFO L226 Difference]: Without dead ends: 260 [2021-05-06 11:37:55,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1882.5ms TimeCoverageRelationStatistics Valid=225, Invalid=6581, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 11:37:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-05-06 11:37:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2021-05-06 11:37:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 204 states have internal predecessors, (205), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:37:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2021-05-06 11:37:55,060 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 246 [2021-05-06 11:37:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:55,060 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2021-05-06 11:37:55,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 54 states have internal predecessors, (130), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:37:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2021-05-06 11:37:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-05-06 11:37:55,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:55,061 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:55,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-06 11:37:55,061 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:55,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1682765390, now seen corresponding path program 47 times [2021-05-06 11:37:55,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:55,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931499668] [2021-05-06 11:37:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:55,064 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:55,064 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:55,065 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-06 11:37:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:37:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:37:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:37:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:37:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:37:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:37:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:37:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:37:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:37:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:37:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:37:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:37:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:37:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:37:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:37:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:37:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:37:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:37:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:37:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:37:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:37:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:37:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:37:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:55,885 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:55,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931499668] [2021-05-06 11:37:55,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [931499668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:55,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:55,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-06 11:37:55,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499985892] [2021-05-06 11:37:55,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 11:37:55,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 11:37:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=2180, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 11:37:55,886 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 54 states, 54 states have (on average 2.462962962962963) internal successors, (133), 53 states have internal predecessors, (133), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:37:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:57,308 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-05-06 11:37:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 11:37:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.462962962962963) internal successors, (133), 53 states have internal predecessors, (133), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 254 [2021-05-06 11:37:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:57,309 INFO L225 Difference]: With dead ends: 368 [2021-05-06 11:37:57,310 INFO L226 Difference]: Without dead ends: 260 [2021-05-06 11:37:57,310 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1223.0ms TimeCoverageRelationStatistics Valid=1388, Invalid=4932, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:37:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-05-06 11:37:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2021-05-06 11:37:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 205 states have (on average 1.0097560975609756) internal successors, (207), 206 states have internal predecessors, (207), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:37:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2021-05-06 11:37:57,336 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 254 [2021-05-06 11:37:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:57,336 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2021-05-06 11:37:57,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.462962962962963) internal successors, (133), 53 states have internal predecessors, (133), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:37:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2021-05-06 11:37:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-05-06 11:37:57,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:57,337 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:57,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-06 11:37:57,338 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash -171045076, now seen corresponding path program 48 times [2021-05-06 11:37:57,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:57,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070153619] [2021-05-06 11:37:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:57,341 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:57,341 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:57,341 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:37:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:37:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:37:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:37:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:37:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:37:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:37:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:37:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:37:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:37:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:37:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:37:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:37:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:37:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:37:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:37:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:37:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:37:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:37:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:37:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:37:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:37:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:37:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:37:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:37:58,747 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:58,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070153619] [2021-05-06 11:37:58,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1070153619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:58,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:58,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-06 11:37:58,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815407461] [2021-05-06 11:37:58,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 11:37:58,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 11:37:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3190, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 11:37:58,748 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand has 58 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 56 states have internal predecessors, (135), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:38:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:02,115 INFO L93 Difference]: Finished difference Result 272 states and 273 transitions. [2021-05-06 11:38:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 11:38:02,116 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 56 states have internal predecessors, (135), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 256 [2021-05-06 11:38:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:02,117 INFO L225 Difference]: With dead ends: 272 [2021-05-06 11:38:02,117 INFO L226 Difference]: Without dead ends: 270 [2021-05-06 11:38:02,117 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 2030.0ms TimeCoverageRelationStatistics Valid=233, Invalid=7077, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:38:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-06 11:38:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2021-05-06 11:38:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 211 states have (on average 1.009478672985782) internal successors, (213), 212 states have internal predecessors, (213), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2021-05-06 11:38:02,162 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 256 [2021-05-06 11:38:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:02,162 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2021-05-06 11:38:02,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 56 states have internal predecessors, (135), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:38:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2021-05-06 11:38:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-05-06 11:38:02,163 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:02,163 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:02,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-06 11:38:02,163 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:02,164 INFO L82 PathProgramCache]: Analyzing trace with hash 981371142, now seen corresponding path program 49 times [2021-05-06 11:38:02,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:02,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180951817] [2021-05-06 11:38:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:02,167 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:02,167 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:02,167 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-05-06 11:38:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:38:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:38:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:38:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:38:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:38:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:38:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:38:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:38:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:38:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:38:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:38:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:38:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:38:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:38:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:38:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:38:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:38:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:38:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:38:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:38:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:38:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:38:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:38:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:38:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:03,001 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:03,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180951817] [2021-05-06 11:38:03,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [180951817] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:03,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:03,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-06 11:38:03,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239312827] [2021-05-06 11:38:03,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-06 11:38:03,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:03,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-06 11:38:03,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:38:03,003 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:38:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:04,504 INFO L93 Difference]: Finished difference Result 382 states and 409 transitions. [2021-05-06 11:38:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 11:38:04,505 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 264 [2021-05-06 11:38:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:04,506 INFO L225 Difference]: With dead ends: 382 [2021-05-06 11:38:04,506 INFO L226 Difference]: Without dead ends: 270 [2021-05-06 11:38:04,507 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1260.2ms TimeCoverageRelationStatistics Valid=1495, Invalid=5311, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 11:38:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-06 11:38:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2021-05-06 11:38:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2021-05-06 11:38:04,534 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 264 [2021-05-06 11:38:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:04,535 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2021-05-06 11:38:04,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:38:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2021-05-06 11:38:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-05-06 11:38:04,536 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:04,536 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:04,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-06 11:38:04,536 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:04,536 INFO L82 PathProgramCache]: Analyzing trace with hash 768910436, now seen corresponding path program 50 times [2021-05-06 11:38:04,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:04,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438966482] [2021-05-06 11:38:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:04,539 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:04,539 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:04,540 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:38:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:38:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:38:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:38:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:38:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:38:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:38:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:38:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:38:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:38:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:38:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:38:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:38:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:38:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:38:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:38:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:38:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:38:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:38:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:38:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:38:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:38:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:38:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:38:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:38:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:06,031 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:06,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438966482] [2021-05-06 11:38:06,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1438966482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:06,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:06,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-06 11:38:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010600030] [2021-05-06 11:38:06,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 11:38:06,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:06,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 11:38:06,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3420, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 11:38:06,032 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand has 60 states, 59 states have (on average 2.3728813559322033) internal successors, (140), 58 states have internal predecessors, (140), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:38:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:09,733 INFO L93 Difference]: Finished difference Result 282 states and 283 transitions. [2021-05-06 11:38:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-06 11:38:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.3728813559322033) internal successors, (140), 58 states have internal predecessors, (140), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 266 [2021-05-06 11:38:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:09,735 INFO L225 Difference]: With dead ends: 282 [2021-05-06 11:38:09,735 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 11:38:09,735 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2185.5ms TimeCoverageRelationStatistics Valid=241, Invalid=7591, Unknown=0, NotChecked=0, Total=7832 [2021-05-06 11:38:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 11:38:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 277. [2021-05-06 11:38:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2021-05-06 11:38:09,769 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 266 [2021-05-06 11:38:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:09,769 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2021-05-06 11:38:09,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 59 states have (on average 2.3728813559322033) internal successors, (140), 58 states have internal predecessors, (140), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:38:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2021-05-06 11:38:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-05-06 11:38:09,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:09,770 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:09,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-06 11:38:09,770 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1343776318, now seen corresponding path program 51 times [2021-05-06 11:38:09,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:09,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627508754] [2021-05-06 11:38:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:09,774 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:09,774 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:09,774 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-05-06 11:38:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:38:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:38:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:38:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:38:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:38:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:38:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:38:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:38:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:38:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:38:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:38:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:38:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:38:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:38:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:38:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:38:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:38:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:38:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:38:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:38:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:38:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:38:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:38:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:38:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:38:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:10,732 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:10,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627508754] [2021-05-06 11:38:10,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [627508754] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:10,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:10,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-06 11:38:10,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077776060] [2021-05-06 11:38:10,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 11:38:10,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 11:38:10,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2516, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 11:38:10,733 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand has 58 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:12,325 INFO L93 Difference]: Finished difference Result 396 states and 424 transitions. [2021-05-06 11:38:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-06 11:38:12,325 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 274 [2021-05-06 11:38:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:12,326 INFO L225 Difference]: With dead ends: 396 [2021-05-06 11:38:12,326 INFO L226 Difference]: Without dead ends: 280 [2021-05-06 11:38:12,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1412.1ms TimeCoverageRelationStatistics Valid=1606, Invalid=5704, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:38:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-06 11:38:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2021-05-06 11:38:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 221 states have (on average 1.009049773755656) internal successors, (223), 222 states have internal predecessors, (223), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2021-05-06 11:38:12,360 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2021-05-06 11:38:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:12,360 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2021-05-06 11:38:12,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2021-05-06 11:38:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-05-06 11:38:12,362 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:12,362 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:12,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-06 11:38:12,362 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1522689052, now seen corresponding path program 52 times [2021-05-06 11:38:12,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:12,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593304429] [2021-05-06 11:38:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:12,365 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:12,365 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:12,366 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:38:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:38:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:38:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:38:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:38:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:38:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:38:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:38:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:38:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:38:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:38:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:38:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:38:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:38:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:38:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:38:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:38:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:38:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:38:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:38:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:38:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:38:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:38:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:38:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:38:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:38:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:13,950 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:13,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593304429] [2021-05-06 11:38:13,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1593304429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:13,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:13,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-06 11:38:13,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115208786] [2021-05-06 11:38:13,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-06 11:38:13,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:13,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-06 11:38:13,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3658, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:38:13,951 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 62 states, 61 states have (on average 2.377049180327869) internal successors, (145), 60 states have internal predecessors, (145), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:17,958 INFO L93 Difference]: Finished difference Result 292 states and 293 transitions. [2021-05-06 11:38:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 11:38:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.377049180327869) internal successors, (145), 60 states have internal predecessors, (145), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 276 [2021-05-06 11:38:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:17,960 INFO L225 Difference]: With dead ends: 292 [2021-05-06 11:38:17,960 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 11:38:17,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 2345.3ms TimeCoverageRelationStatistics Valid=249, Invalid=8123, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 11:38:17,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 11:38:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-05-06 11:38:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2021-05-06 11:38:17,991 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 276 [2021-05-06 11:38:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:17,991 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2021-05-06 11:38:17,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 61 states have (on average 2.377049180327869) internal successors, (145), 60 states have internal predecessors, (145), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:38:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2021-05-06 11:38:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-05-06 11:38:17,992 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:17,992 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:17,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-06 11:38:17,993 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash -536416778, now seen corresponding path program 53 times [2021-05-06 11:38:17,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:17,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608308659] [2021-05-06 11:38:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:17,997 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:17,997 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:17,998 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-05-06 11:38:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:38:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:38:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:38:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:38:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:38:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:38:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:38:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:38:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:38:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:38:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:38:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:38:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:38:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:38:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:38:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:38:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:38:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:38:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:38:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:38:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:38:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:38:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:38:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:38:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:38:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:38:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:18,989 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:18,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608308659] [2021-05-06 11:38:18,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1608308659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:18,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:18,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-06 11:38:18,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292856878] [2021-05-06 11:38:18,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 11:38:18,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:18,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 11:38:18,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=847, Invalid=2693, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 11:38:18,991 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 60 states, 60 states have (on average 2.466666666666667) internal successors, (148), 59 states have internal predecessors, (148), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:20,674 INFO L93 Difference]: Finished difference Result 410 states and 439 transitions. [2021-05-06 11:38:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 11:38:20,674 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.466666666666667) internal successors, (148), 59 states have internal predecessors, (148), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 284 [2021-05-06 11:38:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:20,676 INFO L225 Difference]: With dead ends: 410 [2021-05-06 11:38:20,676 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 11:38:20,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 1485.9ms TimeCoverageRelationStatistics Valid=1721, Invalid=6111, Unknown=0, NotChecked=0, Total=7832 [2021-05-06 11:38:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 11:38:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2021-05-06 11:38:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 229 states have (on average 1.0087336244541485) internal successors, (231), 230 states have internal predecessors, (231), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2021-05-06 11:38:20,713 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 284 [2021-05-06 11:38:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:20,714 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2021-05-06 11:38:20,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.466666666666667) internal successors, (148), 59 states have internal predecessors, (148), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2021-05-06 11:38:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-05-06 11:38:20,715 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:20,715 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:20,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-06 11:38:20,715 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1905545644, now seen corresponding path program 54 times [2021-05-06 11:38:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:20,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653925379] [2021-05-06 11:38:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:20,719 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:20,720 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:20,720 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:38:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:38:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:38:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:38:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:38:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:38:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:38:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:38:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:38:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:38:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:38:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:38:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:38:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:38:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:38:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:38:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:38:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:38:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:38:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:38:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:38:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:38:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:38:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:38:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:38:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:38:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:38:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:22,373 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:22,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653925379] [2021-05-06 11:38:22,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [653925379] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:22,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:22,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-06 11:38:22,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906821596] [2021-05-06 11:38:22,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 11:38:22,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:22,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 11:38:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=3904, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 11:38:22,374 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand has 64 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:26,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:26,590 INFO L93 Difference]: Finished difference Result 302 states and 303 transitions. [2021-05-06 11:38:26,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 11:38:26,591 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 286 [2021-05-06 11:38:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:26,592 INFO L225 Difference]: With dead ends: 302 [2021-05-06 11:38:26,592 INFO L226 Difference]: Without dead ends: 300 [2021-05-06 11:38:26,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2440.5ms TimeCoverageRelationStatistics Valid=257, Invalid=8673, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 11:38:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-05-06 11:38:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2021-05-06 11:38:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 236 states have internal predecessors, (237), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2021-05-06 11:38:26,625 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 286 [2021-05-06 11:38:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:26,625 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2021-05-06 11:38:26,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 63 states have (on average 2.380952380952381) internal successors, (150), 62 states have internal predecessors, (150), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:38:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2021-05-06 11:38:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-05-06 11:38:26,626 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:26,626 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:26,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-06 11:38:26,626 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:26,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1849786322, now seen corresponding path program 55 times [2021-05-06 11:38:26,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:26,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256773180] [2021-05-06 11:38:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:26,630 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:26,630 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:26,630 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-05-06 11:38:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:38:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:38:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:38:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:38:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:38:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:38:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:38:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:38:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:38:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:38:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:38:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:38:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:38:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:38:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:38:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:38:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:38:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:38:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:38:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:38:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:38:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:38:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:38:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:38:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:38:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:38:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:38:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:27,697 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:27,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256773180] [2021-05-06 11:38:27,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256773180] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:27,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:27,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-06 11:38:27,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129641218] [2021-05-06 11:38:27,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-06 11:38:27,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-06 11:38:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=2876, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:38:27,698 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 62 states, 62 states have (on average 2.467741935483871) internal successors, (153), 61 states have internal predecessors, (153), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:29,558 INFO L93 Difference]: Finished difference Result 424 states and 454 transitions. [2021-05-06 11:38:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 11:38:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.467741935483871) internal successors, (153), 61 states have internal predecessors, (153), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 294 [2021-05-06 11:38:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:29,559 INFO L225 Difference]: With dead ends: 424 [2021-05-06 11:38:29,559 INFO L226 Difference]: Without dead ends: 300 [2021-05-06 11:38:29,560 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 1617.1ms TimeCoverageRelationStatistics Valid=1840, Invalid=6532, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 11:38:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-05-06 11:38:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2021-05-06 11:38:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2021-05-06 11:38:29,593 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 294 [2021-05-06 11:38:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:29,593 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2021-05-06 11:38:29,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.467741935483871) internal successors, (153), 61 states have internal predecessors, (153), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2021-05-06 11:38:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-05-06 11:38:29,594 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:29,594 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:29,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-06 11:38:29,595 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:29,595 INFO L82 PathProgramCache]: Analyzing trace with hash -986914036, now seen corresponding path program 56 times [2021-05-06 11:38:29,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:29,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878595340] [2021-05-06 11:38:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:29,598 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:29,598 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:29,598 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:38:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:38:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:38:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:38:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:38:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:38:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:38:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:38:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:38:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:38:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:38:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:38:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:38:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:38:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:38:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:38:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:38:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:38:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:38:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:38:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:38:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:38:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:38:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:38:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:38:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:38:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:38:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:38:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:31,384 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:31,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878595340] [2021-05-06 11:38:31,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [878595340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:31,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:31,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-06 11:38:31,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472198478] [2021-05-06 11:38:31,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 11:38:31,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:31,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 11:38:31,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4158, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 11:38:31,385 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand has 66 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 64 states have internal predecessors, (155), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:35,840 INFO L93 Difference]: Finished difference Result 312 states and 313 transitions. [2021-05-06 11:38:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 11:38:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 64 states have internal predecessors, (155), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 296 [2021-05-06 11:38:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:35,841 INFO L225 Difference]: With dead ends: 312 [2021-05-06 11:38:35,841 INFO L226 Difference]: Without dead ends: 310 [2021-05-06 11:38:35,842 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 2627.7ms TimeCoverageRelationStatistics Valid=265, Invalid=9241, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 11:38:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-05-06 11:38:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2021-05-06 11:38:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2021-05-06 11:38:35,878 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 296 [2021-05-06 11:38:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:35,878 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2021-05-06 11:38:35,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 64 states have internal predecessors, (155), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:38:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2021-05-06 11:38:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-05-06 11:38:35,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:35,879 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:35,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-06 11:38:35,879 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:35,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:35,879 INFO L82 PathProgramCache]: Analyzing trace with hash -281314074, now seen corresponding path program 57 times [2021-05-06 11:38:35,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:35,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011111008] [2021-05-06 11:38:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:35,889 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:35,889 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:35,890 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-05-06 11:38:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:38:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:38:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:38:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:38:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:38:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:38:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:38:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:38:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:38:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:38:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:38:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:38:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:38:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:38:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:38:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:38:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:38:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:38:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:38:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:38:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:38:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:38:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:38:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:38:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:38:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:38:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:38:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:38:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:37,054 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:37,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011111008] [2021-05-06 11:38:37,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1011111008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:37,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:37,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-06 11:38:37,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693890785] [2021-05-06 11:38:37,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 11:38:37,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 11:38:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 11:38:37,056 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand has 64 states, 64 states have (on average 2.46875) internal successors, (158), 63 states have internal predecessors, (158), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:38,303 INFO L93 Difference]: Finished difference Result 438 states and 469 transitions. [2021-05-06 11:38:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-06 11:38:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.46875) internal successors, (158), 63 states have internal predecessors, (158), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 304 [2021-05-06 11:38:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:38,305 INFO L225 Difference]: With dead ends: 438 [2021-05-06 11:38:38,305 INFO L226 Difference]: Without dead ends: 310 [2021-05-06 11:38:38,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1713.4ms TimeCoverageRelationStatistics Valid=1963, Invalid=6967, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 11:38:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-05-06 11:38:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2021-05-06 11:38:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2021-05-06 11:38:38,345 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 304 [2021-05-06 11:38:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:38,345 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2021-05-06 11:38:38,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.46875) internal successors, (158), 63 states have internal predecessors, (158), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2021-05-06 11:38:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-05-06 11:38:38,346 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:38,346 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:38,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-06 11:38:38,347 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:38,347 INFO L82 PathProgramCache]: Analyzing trace with hash -605396412, now seen corresponding path program 58 times [2021-05-06 11:38:38,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:38,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575838614] [2021-05-06 11:38:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:38,354 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:38,355 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:38,355 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:38:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:38:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:38:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:38:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:38:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:38:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:38:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:38:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:38:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:38:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:38:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:38:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:38:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:38:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:38:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:38:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:38:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:38:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:38:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:38:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:38:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:38:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:38:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:38:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:38:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:38:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:38:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:38:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:38:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:40,246 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:40,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575838614] [2021-05-06 11:38:40,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1575838614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:40,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:40,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-06 11:38:40,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019096683] [2021-05-06 11:38:40,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-06 11:38:40,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:40,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-06 11:38:40,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4420, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:38:40,247 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand has 68 states, 67 states have (on average 2.388059701492537) internal successors, (160), 66 states have internal predecessors, (160), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:44,912 INFO L93 Difference]: Finished difference Result 322 states and 323 transitions. [2021-05-06 11:38:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 11:38:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.388059701492537) internal successors, (160), 66 states have internal predecessors, (160), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 306 [2021-05-06 11:38:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:44,913 INFO L225 Difference]: With dead ends: 322 [2021-05-06 11:38:44,913 INFO L226 Difference]: Without dead ends: 320 [2021-05-06 11:38:44,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 2744.7ms TimeCoverageRelationStatistics Valid=273, Invalid=9827, Unknown=0, NotChecked=0, Total=10100 [2021-05-06 11:38:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-05-06 11:38:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 317. [2021-05-06 11:38:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:38:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2021-05-06 11:38:44,950 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 306 [2021-05-06 11:38:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:44,950 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2021-05-06 11:38:44,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 67 states have (on average 2.388059701492537) internal successors, (160), 66 states have internal predecessors, (160), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:38:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2021-05-06 11:38:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-05-06 11:38:44,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:44,952 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:44,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-06 11:38:44,952 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1526875166, now seen corresponding path program 59 times [2021-05-06 11:38:44,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:44,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510181122] [2021-05-06 11:38:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:44,955 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:44,956 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:44,956 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-05-06 11:38:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:38:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:38:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:38:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:38:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:38:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:38:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:38:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:38:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:38:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:38:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:38:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:38:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:38:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:38:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:38:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:38:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:38:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:38:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:38:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:38:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:38:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:38:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:38:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:38:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:38:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:38:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:38:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:38:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:38:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:46,138 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:46,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510181122] [2021-05-06 11:38:46,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1510181122] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:46,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:46,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-06 11:38:46,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347254846] [2021-05-06 11:38:46,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 11:38:46,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:46,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 11:38:46,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1030, Invalid=3260, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 11:38:46,139 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand has 66 states, 66 states have (on average 2.4696969696969697) internal successors, (163), 65 states have internal predecessors, (163), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:48,137 INFO L93 Difference]: Finished difference Result 452 states and 484 transitions. [2021-05-06 11:38:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 11:38:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.4696969696969697) internal successors, (163), 65 states have internal predecessors, (163), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 314 [2021-05-06 11:38:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:48,139 INFO L225 Difference]: With dead ends: 452 [2021-05-06 11:38:48,139 INFO L226 Difference]: Without dead ends: 320 [2021-05-06 11:38:48,140 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1771.3ms TimeCoverageRelationStatistics Valid=2090, Invalid=7416, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 11:38:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-05-06 11:38:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2021-05-06 11:38:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 253 states have (on average 1.007905138339921) internal successors, (255), 254 states have internal predecessors, (255), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:38:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2021-05-06 11:38:48,181 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 314 [2021-05-06 11:38:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:48,181 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2021-05-06 11:38:48,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.4696969696969697) internal successors, (163), 65 states have internal predecessors, (163), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2021-05-06 11:38:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-05-06 11:38:48,182 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:48,182 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:48,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-06 11:38:48,182 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash 101747708, now seen corresponding path program 60 times [2021-05-06 11:38:48,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:48,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876713493] [2021-05-06 11:38:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:48,186 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:48,186 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:48,187 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:38:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:38:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:38:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:38:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:38:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:38:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:38:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:38:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:38:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:38:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:38:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:38:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:38:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:38:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:38:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:38:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:38:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:38:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:38:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:38:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:38:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:38:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:38:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:38:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:38:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:38:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:38:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:38:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:38:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:38:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:50,157 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:50,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876713493] [2021-05-06 11:38:50,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1876713493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:50,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:50,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-06 11:38:50,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930229095] [2021-05-06 11:38:50,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 11:38:50,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:50,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 11:38:50,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4690, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 11:38:50,159 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 70 states, 69 states have (on average 2.391304347826087) internal successors, (165), 68 states have internal predecessors, (165), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:55,239 INFO L93 Difference]: Finished difference Result 332 states and 333 transitions. [2021-05-06 11:38:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 11:38:55,240 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.391304347826087) internal successors, (165), 68 states have internal predecessors, (165), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 316 [2021-05-06 11:38:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:55,241 INFO L225 Difference]: With dead ends: 332 [2021-05-06 11:38:55,241 INFO L226 Difference]: Without dead ends: 330 [2021-05-06 11:38:55,242 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 2915.0ms TimeCoverageRelationStatistics Valid=281, Invalid=10431, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 11:38:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-05-06 11:38:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2021-05-06 11:38:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 259 states have (on average 1.0077220077220077) internal successors, (261), 260 states have internal predecessors, (261), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:38:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2021-05-06 11:38:55,280 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 316 [2021-05-06 11:38:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:55,280 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2021-05-06 11:38:55,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 69 states have (on average 2.391304347826087) internal successors, (165), 68 states have internal predecessors, (165), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:38:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2021-05-06 11:38:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-05-06 11:38:55,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:55,282 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:55,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-06 11:38:55,282 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2044774954, now seen corresponding path program 61 times [2021-05-06 11:38:55,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:55,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544571862] [2021-05-06 11:38:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:55,285 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:55,286 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:55,290 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-05-06 11:38:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:38:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:38:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:38:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:38:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:38:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:38:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:38:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:38:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:38:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:38:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:38:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:38:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:38:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:38:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:38:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:38:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:38:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:38:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:38:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:38:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:38:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:38:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:38:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:38:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:38:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:38:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:38:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:38:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:38:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:38:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:38:56,527 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:56,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544571862] [2021-05-06 11:38:56,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544571862] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:56,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:56,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-06 11:38:56,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296298974] [2021-05-06 11:38:56,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-06 11:38:56,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:56,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-06 11:38:56,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1095, Invalid=3461, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:38:56,528 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 67 states have internal predecessors, (168), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:38:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:58,701 INFO L93 Difference]: Finished difference Result 466 states and 499 transitions. [2021-05-06 11:38:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 11:38:58,701 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 67 states have internal predecessors, (168), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 324 [2021-05-06 11:38:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:58,703 INFO L225 Difference]: With dead ends: 466 [2021-05-06 11:38:58,703 INFO L226 Difference]: Without dead ends: 330 [2021-05-06 11:38:58,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1869.0ms TimeCoverageRelationStatistics Valid=2221, Invalid=7879, Unknown=0, NotChecked=0, Total=10100 [2021-05-06 11:38:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-05-06 11:38:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2021-05-06 11:38:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:38:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2021-05-06 11:38:58,742 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 324 [2021-05-06 11:38:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:58,742 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2021-05-06 11:38:58,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 67 states have internal predecessors, (168), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:38:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2021-05-06 11:38:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-05-06 11:38:58,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:58,744 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:58,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-06 11:38:58,744 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1013727180, now seen corresponding path program 62 times [2021-05-06 11:38:58,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:58,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184424802] [2021-05-06 11:38:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:58,748 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:58,748 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:58,748 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:39:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:39:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:39:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:39:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:39:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:39:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:39:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:39:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:39:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:39:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:39:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:39:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:39:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:39:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:39:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:39:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:39:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:39:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:39:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:39:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:39:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:39:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:39:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:39:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:39:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:39:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:39:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:39:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:39:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:39:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:39:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:00,804 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:00,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184424802] [2021-05-06 11:39:00,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1184424802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:00,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:00,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-06 11:39:00,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595508321] [2021-05-06 11:39:00,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 11:39:00,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 11:39:00,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=4968, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 11:39:00,805 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 72 states, 71 states have (on average 2.3943661971830985) internal successors, (170), 70 states have internal predecessors, (170), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:39:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:06,114 INFO L93 Difference]: Finished difference Result 342 states and 343 transitions. [2021-05-06 11:39:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-06 11:39:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.3943661971830985) internal successors, (170), 70 states have internal predecessors, (170), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 326 [2021-05-06 11:39:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:06,115 INFO L225 Difference]: With dead ends: 342 [2021-05-06 11:39:06,116 INFO L226 Difference]: Without dead ends: 340 [2021-05-06 11:39:06,116 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 3042.6ms TimeCoverageRelationStatistics Valid=289, Invalid=11053, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 11:39:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-05-06 11:39:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 337. [2021-05-06 11:39:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2021-05-06 11:39:06,156 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 326 [2021-05-06 11:39:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:06,157 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2021-05-06 11:39:06,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 71 states have (on average 2.3943661971830985) internal successors, (170), 70 states have internal predecessors, (170), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:39:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2021-05-06 11:39:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-05-06 11:39:06,158 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:06,158 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:06,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-06 11:39:06,158 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1713811982, now seen corresponding path program 63 times [2021-05-06 11:39:06,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:06,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654912134] [2021-05-06 11:39:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:06,168 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:06,168 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:06,169 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-05-06 11:39:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:39:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:39:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:39:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:39:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:39:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:39:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:39:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:39:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:39:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:39:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:39:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:39:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:39:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:39:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:39:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:39:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:39:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:39:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:39:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:39:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:39:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:39:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:39:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:39:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:39:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:39:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:39:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:39:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:39:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:39:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:39:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:07,563 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:07,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654912134] [2021-05-06 11:39:07,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [654912134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:07,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:07,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-06 11:39:07,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832431379] [2021-05-06 11:39:07,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 11:39:07,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:07,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 11:39:07,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=3668, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 11:39:07,565 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:39:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:09,374 INFO L93 Difference]: Finished difference Result 480 states and 514 transitions. [2021-05-06 11:39:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-06 11:39:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 334 [2021-05-06 11:39:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:09,376 INFO L225 Difference]: With dead ends: 480 [2021-05-06 11:39:09,376 INFO L226 Difference]: Without dead ends: 340 [2021-05-06 11:39:09,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 2056.5ms TimeCoverageRelationStatistics Valid=2356, Invalid=8356, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 11:39:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-05-06 11:39:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2021-05-06 11:39:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 269 states have (on average 1.0074349442379182) internal successors, (271), 270 states have internal predecessors, (271), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2021-05-06 11:39:09,418 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2021-05-06 11:39:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:09,418 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2021-05-06 11:39:09,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 69 states have internal predecessors, (173), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:39:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2021-05-06 11:39:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-05-06 11:39:09,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:09,420 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:09,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-06 11:39:09,420 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:09,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1458593516, now seen corresponding path program 64 times [2021-05-06 11:39:09,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:09,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801002590] [2021-05-06 11:39:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:09,429 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:09,429 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:09,430 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:39:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:39:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:39:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:39:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:39:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:39:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:39:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:39:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:39:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:39:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:39:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:39:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:39:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:39:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:39:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:39:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:39:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:39:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:39:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:39:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:39:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:39:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:39:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:39:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:39:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:39:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:39:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:39:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:39:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:39:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:39:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:39:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:11,584 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:11,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801002590] [2021-05-06 11:39:11,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1801002590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:11,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:11,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-06 11:39:11,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434627280] [2021-05-06 11:39:11,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-06 11:39:11,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-06 11:39:11,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5254, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:39:11,585 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand has 74 states, 73 states have (on average 2.3972602739726026) internal successors, (175), 72 states have internal predecessors, (175), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:39:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:17,105 INFO L93 Difference]: Finished difference Result 352 states and 353 transitions. [2021-05-06 11:39:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 11:39:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.3972602739726026) internal successors, (175), 72 states have internal predecessors, (175), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 336 [2021-05-06 11:39:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:17,106 INFO L225 Difference]: With dead ends: 352 [2021-05-06 11:39:17,106 INFO L226 Difference]: Without dead ends: 350 [2021-05-06 11:39:17,107 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 3212.9ms TimeCoverageRelationStatistics Valid=297, Invalid=11693, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 11:39:17,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-05-06 11:39:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2021-05-06 11:39:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2021-05-06 11:39:17,151 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 336 [2021-05-06 11:39:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:17,151 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2021-05-06 11:39:17,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 73 states have (on average 2.3972602739726026) internal successors, (175), 72 states have internal predecessors, (175), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:39:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2021-05-06 11:39:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-05-06 11:39:17,152 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:17,152 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:17,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-06 11:39:17,153 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1422583610, now seen corresponding path program 65 times [2021-05-06 11:39:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:17,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122777390] [2021-05-06 11:39:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:17,157 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:17,157 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:17,157 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-05-06 11:39:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:39:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:39:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:39:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:39:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:39:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:39:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:39:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:39:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:39:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:39:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:39:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:39:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:39:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:39:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:39:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:39:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:39:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:39:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:39:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:39:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:39:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:39:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:39:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:39:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:39:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:39:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:39:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:39:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:39:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:39:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:39:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:39:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:18,557 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:18,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122777390] [2021-05-06 11:39:18,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [122777390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:18,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:18,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-06 11:39:18,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032930449] [2021-05-06 11:39:18,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 11:39:18,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 11:39:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=3881, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 11:39:18,558 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand has 72 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:20,430 INFO L93 Difference]: Finished difference Result 494 states and 529 transitions. [2021-05-06 11:39:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 11:39:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 344 [2021-05-06 11:39:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:20,433 INFO L225 Difference]: With dead ends: 494 [2021-05-06 11:39:20,433 INFO L226 Difference]: Without dead ends: 350 [2021-05-06 11:39:20,434 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 2114.0ms TimeCoverageRelationStatistics Valid=2495, Invalid=8847, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 11:39:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-05-06 11:39:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2021-05-06 11:39:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 278 states have internal predecessors, (279), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2021-05-06 11:39:20,488 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 344 [2021-05-06 11:39:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:20,488 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2021-05-06 11:39:20,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2021-05-06 11:39:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-05-06 11:39:20,490 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:20,490 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:20,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-06 11:39:20,490 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:20,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1154824156, now seen corresponding path program 66 times [2021-05-06 11:39:20,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:20,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164865872] [2021-05-06 11:39:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:20,494 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:20,494 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:20,494 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:39:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:39:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:39:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:39:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:39:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:39:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:39:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:39:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:39:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:39:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:39:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:39:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:39:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:39:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:39:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:39:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:39:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:39:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:39:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:39:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:39:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:39:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:39:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:39:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:39:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:39:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:39:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:39:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:39:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:39:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:39:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:39:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:39:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:22,845 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:22,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164865872] [2021-05-06 11:39:22,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [164865872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:22,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:22,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-06 11:39:22,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048686004] [2021-05-06 11:39:22,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 11:39:22,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:22,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 11:39:22,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5548, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 11:39:22,846 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand has 76 states, 75 states have (on average 2.4) internal successors, (180), 74 states have internal predecessors, (180), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:28,778 INFO L93 Difference]: Finished difference Result 362 states and 363 transitions. [2021-05-06 11:39:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 11:39:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.4) internal successors, (180), 74 states have internal predecessors, (180), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 346 [2021-05-06 11:39:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:28,780 INFO L225 Difference]: With dead ends: 362 [2021-05-06 11:39:28,780 INFO L226 Difference]: Without dead ends: 360 [2021-05-06 11:39:28,781 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 3490.1ms TimeCoverageRelationStatistics Valid=305, Invalid=12351, Unknown=0, NotChecked=0, Total=12656 [2021-05-06 11:39:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-05-06 11:39:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2021-05-06 11:39:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 284 states have internal predecessors, (285), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2021-05-06 11:39:28,826 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 346 [2021-05-06 11:39:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:28,826 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2021-05-06 11:39:28,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 75 states have (on average 2.4) internal successors, (180), 74 states have internal predecessors, (180), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:39:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2021-05-06 11:39:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-05-06 11:39:28,828 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:28,828 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:28,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-06 11:39:28,828 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1242641922, now seen corresponding path program 67 times [2021-05-06 11:39:28,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:28,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193978252] [2021-05-06 11:39:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:28,833 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:28,833 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:28,833 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-05-06 11:39:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:39:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:39:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:39:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:39:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:39:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:39:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:39:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:39:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:39:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:39:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:39:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:39:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:39:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:39:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:39:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:39:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:39:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:39:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:39:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:39:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:39:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:39:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:39:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:39:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:39:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:39:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:39:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:39:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:39:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:39:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:39:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:39:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:39:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:30,311 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:30,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193978252] [2021-05-06 11:39:30,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193978252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:30,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:30,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-06 11:39:30,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972361484] [2021-05-06 11:39:30,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-06 11:39:30,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-06 11:39:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1302, Invalid=4100, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:39:30,312 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand has 74 states, 74 states have (on average 2.472972972972973) internal successors, (183), 73 states have internal predecessors, (183), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:32,274 INFO L93 Difference]: Finished difference Result 508 states and 544 transitions. [2021-05-06 11:39:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 11:39:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.472972972972973) internal successors, (183), 73 states have internal predecessors, (183), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 354 [2021-05-06 11:39:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:32,276 INFO L225 Difference]: With dead ends: 508 [2021-05-06 11:39:32,276 INFO L226 Difference]: Without dead ends: 360 [2021-05-06 11:39:32,276 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 2233.9ms TimeCoverageRelationStatistics Valid=2638, Invalid=9352, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 11:39:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-05-06 11:39:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2021-05-06 11:39:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2021-05-06 11:39:32,322 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 354 [2021-05-06 11:39:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:32,323 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2021-05-06 11:39:32,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.472972972972973) internal successors, (183), 73 states have internal predecessors, (183), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2021-05-06 11:39:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-05-06 11:39:32,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:32,324 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:32,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-06 11:39:32,324 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash 433019868, now seen corresponding path program 68 times [2021-05-06 11:39:32,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:32,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70560481] [2021-05-06 11:39:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:32,330 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:32,331 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:32,331 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:39:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:39:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:39:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:39:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:39:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:39:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:39:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:39:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:39:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:39:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:39:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:39:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:39:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:39:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:39:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:39:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:39:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:39:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:39:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:39:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:39:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:39:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:39:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:39:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:39:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:39:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:39:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:39:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:39:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:39:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:39:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:39:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:39:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:39:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:34,754 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:34,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70560481] [2021-05-06 11:39:34,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [70560481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:34,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:34,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-06 11:39:34,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671346722] [2021-05-06 11:39:34,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 11:39:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 11:39:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=5850, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 11:39:34,755 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 78 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 76 states have internal predecessors, (185), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:41,113 INFO L93 Difference]: Finished difference Result 372 states and 373 transitions. [2021-05-06 11:39:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 11:39:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 76 states have internal predecessors, (185), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 356 [2021-05-06 11:39:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:41,115 INFO L225 Difference]: With dead ends: 372 [2021-05-06 11:39:41,115 INFO L226 Difference]: Without dead ends: 370 [2021-05-06 11:39:41,116 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 3638.5ms TimeCoverageRelationStatistics Valid=313, Invalid=13027, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 11:39:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-05-06 11:39:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2021-05-06 11:39:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:39:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2021-05-06 11:39:41,163 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 356 [2021-05-06 11:39:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:41,163 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2021-05-06 11:39:41,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 76 states have internal predecessors, (185), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:39:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2021-05-06 11:39:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-05-06 11:39:41,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:41,165 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:41,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-06 11:39:41,165 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:41,166 INFO L82 PathProgramCache]: Analyzing trace with hash 226502070, now seen corresponding path program 69 times [2021-05-06 11:39:41,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:41,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053177419] [2021-05-06 11:39:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:41,172 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:41,172 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:41,173 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-05-06 11:39:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:39:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:39:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:39:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:39:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:39:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:39:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:39:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:39:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:39:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:39:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:39:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:39:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:39:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:39:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:39:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:39:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:39:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:39:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:39:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:39:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:39:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:39:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:39:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:39:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:39:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:39:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:39:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:39:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:39:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:39:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:39:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:39:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:39:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:39:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:42,695 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:42,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053177419] [2021-05-06 11:39:42,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1053177419] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:42,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:42,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-06 11:39:42,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388357991] [2021-05-06 11:39:42,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 11:39:42,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:42,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 11:39:42,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1375, Invalid=4325, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 11:39:42,696 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 76 states, 76 states have (on average 2.473684210526316) internal successors, (188), 75 states have internal predecessors, (188), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:44,635 INFO L93 Difference]: Finished difference Result 522 states and 559 transitions. [2021-05-06 11:39:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-06 11:39:44,635 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.473684210526316) internal successors, (188), 75 states have internal predecessors, (188), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 364 [2021-05-06 11:39:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:44,653 INFO L225 Difference]: With dead ends: 522 [2021-05-06 11:39:44,653 INFO L226 Difference]: Without dead ends: 370 [2021-05-06 11:39:44,654 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 2280.4ms TimeCoverageRelationStatistics Valid=2785, Invalid=9871, Unknown=0, NotChecked=0, Total=12656 [2021-05-06 11:39:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-05-06 11:39:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2021-05-06 11:39:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 293 states have (on average 1.006825938566553) internal successors, (295), 294 states have internal predecessors, (295), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:39:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2021-05-06 11:39:44,702 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 364 [2021-05-06 11:39:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:44,702 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2021-05-06 11:39:44,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.473684210526316) internal successors, (188), 75 states have internal predecessors, (188), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2021-05-06 11:39:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-05-06 11:39:44,704 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:44,704 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:44,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-06 11:39:44,704 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1057850860, now seen corresponding path program 70 times [2021-05-06 11:39:44,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:44,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864997495] [2021-05-06 11:39:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:44,708 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:44,708 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:44,708 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:39:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:39:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:39:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:39:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:39:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:39:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:39:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:39:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:39:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:39:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:39:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:39:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:39:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:39:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:39:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:39:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:39:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:39:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:39:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:39:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:39:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:39:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:39:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:39:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:39:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:39:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:39:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:39:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:39:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:39:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:39:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:39:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:39:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:39:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:39:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:47,331 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:47,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864997495] [2021-05-06 11:39:47,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [864997495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:47,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:47,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-06 11:39:47,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539841167] [2021-05-06 11:39:47,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-06 11:39:47,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:47,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-06 11:39:47,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6160, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:39:47,332 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand has 80 states, 79 states have (on average 2.4050632911392404) internal successors, (190), 78 states have internal predecessors, (190), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:55,098 INFO L93 Difference]: Finished difference Result 382 states and 383 transitions. [2021-05-06 11:39:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 11:39:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.4050632911392404) internal successors, (190), 78 states have internal predecessors, (190), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 366 [2021-05-06 11:39:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:55,100 INFO L225 Difference]: With dead ends: 382 [2021-05-06 11:39:55,100 INFO L226 Difference]: Without dead ends: 380 [2021-05-06 11:39:55,101 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 4108.6ms TimeCoverageRelationStatistics Valid=321, Invalid=13721, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 11:39:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-06 11:39:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 377. [2021-05-06 11:39:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 299 states have (on average 1.0066889632107023) internal successors, (301), 300 states have internal predecessors, (301), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:39:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2021-05-06 11:39:55,160 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 366 [2021-05-06 11:39:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:55,160 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2021-05-06 11:39:55,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 79 states have (on average 2.4050632911392404) internal successors, (190), 78 states have internal predecessors, (190), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:39:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2021-05-06 11:39:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-05-06 11:39:55,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:55,162 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:55,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-06 11:39:55,162 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1436388334, now seen corresponding path program 71 times [2021-05-06 11:39:55,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:55,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542806396] [2021-05-06 11:39:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:55,165 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:55,165 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:55,165 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-05-06 11:39:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:39:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:39:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:39:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:39:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:39:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:39:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:39:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:39:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:39:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:39:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:39:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:39:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:39:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:39:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:39:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:39:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:39:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:39:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:39:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:39:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:39:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:39:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:39:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:39:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:39:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:39:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:39:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:39:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:39:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:39:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:39:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:39:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:39:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:39:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:39:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:39:56,813 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:56,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542806396] [2021-05-06 11:39:56,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [542806396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:56,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:56,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-06 11:39:56,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118266314] [2021-05-06 11:39:56,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 11:39:56,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:56,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 11:39:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1450, Invalid=4556, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 11:39:56,814 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:39:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:58,957 INFO L93 Difference]: Finished difference Result 536 states and 574 transitions. [2021-05-06 11:39:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 11:39:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 374 [2021-05-06 11:39:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:58,959 INFO L225 Difference]: With dead ends: 536 [2021-05-06 11:39:58,959 INFO L226 Difference]: Without dead ends: 380 [2021-05-06 11:39:58,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 2507.7ms TimeCoverageRelationStatistics Valid=2936, Invalid=10404, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 11:39:58,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-06 11:39:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 379. [2021-05-06 11:39:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 301 states have (on average 1.0066445182724253) internal successors, (303), 302 states have internal predecessors, (303), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:39:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2021-05-06 11:39:59,010 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 374 [2021-05-06 11:39:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:59,010 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2021-05-06 11:39:59,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 77 states have internal predecessors, (193), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:39:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2021-05-06 11:39:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-05-06 11:39:59,012 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:59,012 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:59,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-06 11:39:59,012 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1724874036, now seen corresponding path program 72 times [2021-05-06 11:39:59,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:59,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718531106] [2021-05-06 11:39:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:59,015 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:59,015 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:59,016 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:40:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:40:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:40:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:40:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:40:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:40:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:40:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:40:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:40:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:40:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:40:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:40:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:40:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:40:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:40:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:40:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:40:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:40:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:40:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:40:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:40:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:40:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:40:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:40:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:40:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:40:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:40:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:40:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:40:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:40:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:40:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:40:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:40:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:40:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:40:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:40:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:01,629 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:01,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718531106] [2021-05-06 11:40:01,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1718531106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:01,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:01,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-06 11:40:01,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161487933] [2021-05-06 11:40:01,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 11:40:01,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 11:40:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6478, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 11:40:01,630 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:40:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:09,134 INFO L93 Difference]: Finished difference Result 392 states and 393 transitions. [2021-05-06 11:40:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 11:40:09,135 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 376 [2021-05-06 11:40:09,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:09,136 INFO L225 Difference]: With dead ends: 392 [2021-05-06 11:40:09,136 INFO L226 Difference]: Without dead ends: 390 [2021-05-06 11:40:09,137 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 4098.3ms TimeCoverageRelationStatistics Valid=329, Invalid=14433, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 11:40:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-05-06 11:40:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2021-05-06 11:40:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.006514657980456) internal successors, (309), 308 states have internal predecessors, (309), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2021-05-06 11:40:09,193 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 376 [2021-05-06 11:40:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:09,193 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2021-05-06 11:40:09,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 81 states have (on average 2.4074074074074074) internal successors, (195), 80 states have internal predecessors, (195), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:40:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2021-05-06 11:40:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-05-06 11:40:09,195 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:09,195 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:09,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-06 11:40:09,195 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash -998024026, now seen corresponding path program 73 times [2021-05-06 11:40:09,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:09,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358005738] [2021-05-06 11:40:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:09,198 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:09,198 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:09,199 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-05-06 11:40:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:40:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:40:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:40:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:40:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:40:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:40:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:40:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:40:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:40:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:40:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:40:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:40:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:40:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:40:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:40:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:40:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:40:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:40:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:40:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:40:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:40:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:40:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:40:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:40:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:40:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:40:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:40:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:40:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:40:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:40:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:40:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:40:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:40:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:40:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:40:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:40:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:11,157 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:11,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358005738] [2021-05-06 11:40:11,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1358005738] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:11,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:11,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-06 11:40:11,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009073461] [2021-05-06 11:40:11,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-06 11:40:11,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-06 11:40:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1527, Invalid=4793, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:40:11,159 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand has 80 states, 80 states have (on average 2.475) internal successors, (198), 79 states have internal predecessors, (198), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:40:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:13,401 INFO L93 Difference]: Finished difference Result 550 states and 589 transitions. [2021-05-06 11:40:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 11:40:13,402 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.475) internal successors, (198), 79 states have internal predecessors, (198), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 384 [2021-05-06 11:40:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:13,403 INFO L225 Difference]: With dead ends: 550 [2021-05-06 11:40:13,403 INFO L226 Difference]: Without dead ends: 390 [2021-05-06 11:40:13,404 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 2925.0ms TimeCoverageRelationStatistics Valid=3091, Invalid=10951, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 11:40:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-05-06 11:40:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2021-05-06 11:40:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2021-05-06 11:40:13,457 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 384 [2021-05-06 11:40:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:13,457 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2021-05-06 11:40:13,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.475) internal successors, (198), 79 states have internal predecessors, (198), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:40:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2021-05-06 11:40:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-05-06 11:40:13,459 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:13,459 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:13,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-06 11:40:13,459 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 464377348, now seen corresponding path program 74 times [2021-05-06 11:40:13,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:13,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663013736] [2021-05-06 11:40:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:13,478 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:13,479 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:13,479 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:40:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:40:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:40:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:40:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:40:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:40:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:40:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:40:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:40:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:40:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:40:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:40:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:40:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:40:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:40:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:40:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:40:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:40:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:40:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:40:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:40:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:40:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:40:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:40:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:40:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:40:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:40:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:40:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:40:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:40:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:40:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:40:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:40:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:40:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:40:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:40:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:16,470 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:16,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663013736] [2021-05-06 11:40:16,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [663013736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:16,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:16,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-06 11:40:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004914989] [2021-05-06 11:40:16,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 11:40:16,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 11:40:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6804, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 11:40:16,472 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand has 84 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 82 states have internal predecessors, (200), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:40:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:24,320 INFO L93 Difference]: Finished difference Result 402 states and 403 transitions. [2021-05-06 11:40:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-06 11:40:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 82 states have internal predecessors, (200), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 386 [2021-05-06 11:40:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:24,322 INFO L225 Difference]: With dead ends: 402 [2021-05-06 11:40:24,322 INFO L226 Difference]: Without dead ends: 400 [2021-05-06 11:40:24,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 4457.7ms TimeCoverageRelationStatistics Valid=337, Invalid=15163, Unknown=0, NotChecked=0, Total=15500 [2021-05-06 11:40:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-05-06 11:40:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 397. [2021-05-06 11:40:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2021-05-06 11:40:24,395 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 386 [2021-05-06 11:40:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:24,395 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2021-05-06 11:40:24,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 83 states have (on average 2.4096385542168677) internal successors, (200), 82 states have internal predecessors, (200), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:40:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2021-05-06 11:40:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-05-06 11:40:24,397 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:24,397 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:24,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-06 11:40:24,397 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash 418772958, now seen corresponding path program 75 times [2021-05-06 11:40:24,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:24,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582063831] [2021-05-06 11:40:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:24,422 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:24,422 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:24,423 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-05-06 11:40:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:40:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:40:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:40:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:40:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:40:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:40:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:40:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:40:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:40:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:40:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:40:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:40:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:40:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:40:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:40:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:40:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:40:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:40:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:40:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:40:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:40:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:40:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:40:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:40:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:40:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:40:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:40:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:40:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:40:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:40:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:40:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:40:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:40:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:40:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:40:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:40:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:40:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:26,295 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:26,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582063831] [2021-05-06 11:40:26,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1582063831] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:26,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:26,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-06 11:40:26,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251825155] [2021-05-06 11:40:26,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 11:40:26,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:26,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 11:40:26,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1606, Invalid=5036, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 11:40:26,296 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand has 82 states, 82 states have (on average 2.475609756097561) internal successors, (203), 81 states have internal predecessors, (203), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:28,741 INFO L93 Difference]: Finished difference Result 564 states and 604 transitions. [2021-05-06 11:40:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-06 11:40:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.475609756097561) internal successors, (203), 81 states have internal predecessors, (203), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 394 [2021-05-06 11:40:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:28,743 INFO L225 Difference]: With dead ends: 564 [2021-05-06 11:40:28,743 INFO L226 Difference]: Without dead ends: 400 [2021-05-06 11:40:28,757 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 2874.0ms TimeCoverageRelationStatistics Valid=3250, Invalid=11512, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 11:40:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-05-06 11:40:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 399. [2021-05-06 11:40:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 318 states have internal predecessors, (319), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2021-05-06 11:40:28,819 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 394 [2021-05-06 11:40:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:28,819 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2021-05-06 11:40:28,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.475609756097561) internal successors, (203), 81 states have internal predecessors, (203), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2021-05-06 11:40:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-05-06 11:40:28,821 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:28,821 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:28,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-06 11:40:28,821 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash -938028100, now seen corresponding path program 76 times [2021-05-06 11:40:28,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:28,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34327681] [2021-05-06 11:40:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:28,824 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:28,824 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:28,825 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:40:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:40:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:40:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:40:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:40:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:40:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:40:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:40:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:40:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:40:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:40:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:40:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:40:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:40:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:40:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:40:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:40:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:40:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:40:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:40:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:40:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:40:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:40:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:40:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:40:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:40:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:40:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:40:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:40:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:40:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:40:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:40:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:40:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:40:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:40:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:40:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:40:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:40:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:31,804 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:31,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34327681] [2021-05-06 11:40:31,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [34327681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:31,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:31,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-06 11:40:31,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613830427] [2021-05-06 11:40:31,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-06 11:40:31,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-06 11:40:31,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7138, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:40:31,806 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 86 states, 85 states have (on average 2.411764705882353) internal successors, (205), 84 states have internal predecessors, (205), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:39,653 INFO L93 Difference]: Finished difference Result 412 states and 413 transitions. [2021-05-06 11:40:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 11:40:39,653 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.411764705882353) internal successors, (205), 84 states have internal predecessors, (205), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 396 [2021-05-06 11:40:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:39,654 INFO L225 Difference]: With dead ends: 412 [2021-05-06 11:40:39,654 INFO L226 Difference]: Without dead ends: 410 [2021-05-06 11:40:39,655 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 4514.7ms TimeCoverageRelationStatistics Valid=345, Invalid=15911, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 11:40:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-05-06 11:40:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2021-05-06 11:40:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 323 states have (on average 1.0061919504643964) internal successors, (325), 324 states have internal predecessors, (325), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:40:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2021-05-06 11:40:39,718 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 396 [2021-05-06 11:40:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:39,718 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2021-05-06 11:40:39,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 85 states have (on average 2.411764705882353) internal successors, (205), 84 states have internal predecessors, (205), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:40:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2021-05-06 11:40:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-05-06 11:40:39,720 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:39,720 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:39,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-06 11:40:39,720 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash 272743830, now seen corresponding path program 77 times [2021-05-06 11:40:39,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:39,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510046748] [2021-05-06 11:40:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:39,723 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:39,723 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:39,724 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-05-06 11:40:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:40:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:40:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:40:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:40:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:40:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:40:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:40:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:40:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:40:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:40:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:40:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:40:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:40:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:40:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:40:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:40:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:40:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:40:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:40:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:40:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:40:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:40:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:40:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:40:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:40:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:40:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:40:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:40:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:40:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:40:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:40:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:40:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:40:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:40:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:40:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:40:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:40:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:40:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:41,706 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:41,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510046748] [2021-05-06 11:40:41,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1510046748] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:41,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:41,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-06 11:40:41,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759924086] [2021-05-06 11:40:41,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 11:40:41,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:41,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 11:40:41,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1687, Invalid=5285, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 11:40:41,708 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 83 states have internal predecessors, (208), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:43,822 INFO L93 Difference]: Finished difference Result 578 states and 619 transitions. [2021-05-06 11:40:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 11:40:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 83 states have internal predecessors, (208), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 404 [2021-05-06 11:40:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:43,823 INFO L225 Difference]: With dead ends: 578 [2021-05-06 11:40:43,823 INFO L226 Difference]: Without dead ends: 410 [2021-05-06 11:40:43,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 2973.7ms TimeCoverageRelationStatistics Valid=3413, Invalid=12087, Unknown=0, NotChecked=0, Total=15500 [2021-05-06 11:40:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-05-06 11:40:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2021-05-06 11:40:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 325 states have (on average 1.0061538461538462) internal successors, (327), 326 states have internal predecessors, (327), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:40:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2021-05-06 11:40:43,882 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 404 [2021-05-06 11:40:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:43,882 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2021-05-06 11:40:43,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.4761904761904763) internal successors, (208), 83 states have internal predecessors, (208), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2021-05-06 11:40:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-05-06 11:40:43,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:43,884 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:43,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-06 11:40:43,884 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:43,884 INFO L82 PathProgramCache]: Analyzing trace with hash 446684148, now seen corresponding path program 78 times [2021-05-06 11:40:43,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:43,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697386556] [2021-05-06 11:40:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:43,887 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:43,888 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:43,888 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:40:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:40:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:40:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:40:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:40:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:40:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:40:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:40:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:40:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:40:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:40:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:40:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:40:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:40:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:40:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:40:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:40:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:40:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:40:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:40:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:40:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:40:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:40:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:40:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:40:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:40:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:40:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:40:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:40:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:40:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:40:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:40:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:40:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:40:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:40:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:40:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:40:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:40:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:40:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:47,305 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697386556] [2021-05-06 11:40:47,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1697386556] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:47,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:47,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-06 11:40:47,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976232717] [2021-05-06 11:40:47,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 11:40:47,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 11:40:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7480, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 11:40:47,307 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 86 states have internal predecessors, (210), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:55,970 INFO L93 Difference]: Finished difference Result 422 states and 423 transitions. [2021-05-06 11:40:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 11:40:55,970 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 86 states have internal predecessors, (210), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 406 [2021-05-06 11:40:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:55,971 INFO L225 Difference]: With dead ends: 422 [2021-05-06 11:40:55,971 INFO L226 Difference]: Without dead ends: 420 [2021-05-06 11:40:55,972 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 5053.3ms TimeCoverageRelationStatistics Valid=353, Invalid=16677, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 11:40:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-05-06 11:40:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 417. [2021-05-06 11:40:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 331 states have (on average 1.0060422960725075) internal successors, (333), 332 states have internal predecessors, (333), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:40:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2021-05-06 11:40:56,032 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 406 [2021-05-06 11:40:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:56,033 INFO L480 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2021-05-06 11:40:56,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 86 states have internal predecessors, (210), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:40:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2021-05-06 11:40:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-05-06 11:40:56,034 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:56,034 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:56,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-06 11:40:56,034 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:56,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:56,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1547374030, now seen corresponding path program 79 times [2021-05-06 11:40:56,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:56,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233178217] [2021-05-06 11:40:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:56,038 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:56,038 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:56,038 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-05-06 11:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:40:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:40:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:40:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:40:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:40:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:40:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:40:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:40:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:40:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:40:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:40:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:40:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:40:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:40:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:40:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:40:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:40:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:40:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:40:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:40:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:40:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:40:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:40:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:40:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:40:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:40:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:40:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:40:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:40:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:40:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:40:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:40:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:40:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:40:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:40:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:40:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:40:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:40:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:40:58,129 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:58,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233178217] [2021-05-06 11:40:58,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1233178217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:58,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:58,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-06 11:40:58,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272229137] [2021-05-06 11:40:58,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-06 11:40:58,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-06 11:40:58,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=5540, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:40:58,131 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand has 86 states, 86 states have (on average 2.4767441860465116) internal successors, (213), 85 states have internal predecessors, (213), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:41:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:00,725 INFO L93 Difference]: Finished difference Result 592 states and 634 transitions. [2021-05-06 11:41:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 11:41:00,726 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.4767441860465116) internal successors, (213), 85 states have internal predecessors, (213), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 414 [2021-05-06 11:41:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:00,728 INFO L225 Difference]: With dead ends: 592 [2021-05-06 11:41:00,729 INFO L226 Difference]: Without dead ends: 420 [2021-05-06 11:41:00,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 3126.5ms TimeCoverageRelationStatistics Valid=3580, Invalid=12676, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 11:41:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-05-06 11:41:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2021-05-06 11:41:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 333 states have (on average 1.006006006006006) internal successors, (335), 334 states have internal predecessors, (335), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:41:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2021-05-06 11:41:00,802 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 414 [2021-05-06 11:41:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:00,802 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2021-05-06 11:41:00,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.4767441860465116) internal successors, (213), 85 states have internal predecessors, (213), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:41:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2021-05-06 11:41:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-05-06 11:41:00,804 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:00,804 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:00,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-06 11:41:00,804 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:00,804 INFO L82 PathProgramCache]: Analyzing trace with hash 33902252, now seen corresponding path program 80 times [2021-05-06 11:41:00,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:00,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982155298] [2021-05-06 11:41:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:00,807 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:00,807 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:00,808 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:41:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:41:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:41:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:41:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:41:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:41:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:41:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:41:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:41:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:41:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:41:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:41:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:41:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:41:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:41:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:41:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:41:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:41:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:41:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:41:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:41:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:41:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:41:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:41:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:41:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:41:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:41:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:41:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:41:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:41:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:41:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:41:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:41:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:41:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:41:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:41:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:41:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:41:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:41:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:41:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:04,001 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:04,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982155298] [2021-05-06 11:41:04,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1982155298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:04,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:04,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2021-05-06 11:41:04,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322628777] [2021-05-06 11:41:04,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 11:41:04,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 11:41:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=7830, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 11:41:04,002 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand has 90 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:41:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:12,737 INFO L93 Difference]: Finished difference Result 432 states and 433 transitions. [2021-05-06 11:41:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 11:41:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 416 [2021-05-06 11:41:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:12,738 INFO L225 Difference]: With dead ends: 432 [2021-05-06 11:41:12,738 INFO L226 Difference]: Without dead ends: 430 [2021-05-06 11:41:12,739 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 4882.0ms TimeCoverageRelationStatistics Valid=361, Invalid=17461, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 11:41:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-05-06 11:41:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 427. [2021-05-06 11:41:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 339 states have (on average 1.0058997050147493) internal successors, (341), 340 states have internal predecessors, (341), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2021-05-06 11:41:12,801 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 416 [2021-05-06 11:41:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:12,801 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2021-05-06 11:41:12,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 89 states have (on average 2.4157303370786516) internal successors, (215), 88 states have internal predecessors, (215), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:41:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2021-05-06 11:41:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-05-06 11:41:12,803 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:12,803 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:12,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-06 11:41:12,803 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 423512198, now seen corresponding path program 81 times [2021-05-06 11:41:12,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:12,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045362375] [2021-05-06 11:41:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:12,814 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:12,814 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:12,815 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-05-06 11:41:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:41:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:41:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:41:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:41:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:41:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:41:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:41:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:41:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:41:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:41:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:41:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:41:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:41:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:41:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:41:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:41:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:41:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:41:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:41:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:41:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:41:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:41:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:41:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:41:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:41:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:41:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:41:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:41:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:41:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:41:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:41:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:41:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:41:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:41:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:41:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:41:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:41:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:41:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:41:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:41:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:14,846 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:14,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045362375] [2021-05-06 11:41:14,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2045362375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:14,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:14,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-06 11:41:14,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033248263] [2021-05-06 11:41:14,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 11:41:14,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 11:41:14,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1855, Invalid=5801, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 11:41:14,848 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand has 88 states, 88 states have (on average 2.477272727272727) internal successors, (218), 87 states have internal predecessors, (218), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:41:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:17,509 INFO L93 Difference]: Finished difference Result 606 states and 649 transitions. [2021-05-06 11:41:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-06 11:41:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.477272727272727) internal successors, (218), 87 states have internal predecessors, (218), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 424 [2021-05-06 11:41:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:17,511 INFO L225 Difference]: With dead ends: 606 [2021-05-06 11:41:17,511 INFO L226 Difference]: Without dead ends: 430 [2021-05-06 11:41:17,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 3116.8ms TimeCoverageRelationStatistics Valid=3751, Invalid=13279, Unknown=0, NotChecked=0, Total=17030 [2021-05-06 11:41:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-05-06 11:41:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2021-05-06 11:41:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 341 states have (on average 1.0058651026392962) internal successors, (343), 342 states have internal predecessors, (343), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2021-05-06 11:41:17,581 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 424 [2021-05-06 11:41:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:17,582 INFO L480 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2021-05-06 11:41:17,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.477272727272727) internal successors, (218), 87 states have internal predecessors, (218), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:41:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2021-05-06 11:41:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-05-06 11:41:17,583 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:17,583 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:17,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-06 11:41:17,584 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -712274972, now seen corresponding path program 82 times [2021-05-06 11:41:17,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:17,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799351175] [2021-05-06 11:41:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:17,587 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:17,587 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:17,588 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:41:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:41:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:41:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:41:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:41:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:41:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:41:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:41:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:41:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:41:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:41:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:41:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:41:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:41:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:41:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:41:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:41:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:41:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:41:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:41:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:41:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:41:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:41:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:41:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:41:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:41:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:41:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:41:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:41:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:41:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:41:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:41:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:41:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:41:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:41:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:41:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:41:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:41:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:41:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:41:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:41:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:20,988 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:20,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799351175] [2021-05-06 11:41:20,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [799351175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:20,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:20,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2021-05-06 11:41:20,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534948555] [2021-05-06 11:41:20,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-06 11:41:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-06 11:41:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8188, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 11:41:20,989 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand has 92 states, 91 states have (on average 2.4175824175824174) internal successors, (220), 90 states have internal predecessors, (220), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:41:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:29,829 INFO L93 Difference]: Finished difference Result 442 states and 443 transitions. [2021-05-06 11:41:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 11:41:29,829 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.4175824175824174) internal successors, (220), 90 states have internal predecessors, (220), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 426 [2021-05-06 11:41:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:29,830 INFO L225 Difference]: With dead ends: 442 [2021-05-06 11:41:29,830 INFO L226 Difference]: Without dead ends: 440 [2021-05-06 11:41:29,831 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 5066.8ms TimeCoverageRelationStatistics Valid=369, Invalid=18263, Unknown=0, NotChecked=0, Total=18632 [2021-05-06 11:41:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-05-06 11:41:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2021-05-06 11:41:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 347 states have (on average 1.005763688760807) internal successors, (349), 348 states have internal predecessors, (349), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:41:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2021-05-06 11:41:29,904 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 426 [2021-05-06 11:41:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:29,904 INFO L480 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2021-05-06 11:41:29,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 91 states have (on average 2.4175824175824174) internal successors, (220), 90 states have internal predecessors, (220), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:41:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2021-05-06 11:41:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-05-06 11:41:29,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:29,906 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:29,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-06 11:41:29,906 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1003500098, now seen corresponding path program 83 times [2021-05-06 11:41:29,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:29,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293918449] [2021-05-06 11:41:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:29,909 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:29,910 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:29,910 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-05-06 11:41:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:41:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:41:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:41:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:41:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:41:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:41:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:41:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:41:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:41:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:41:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:41:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:41:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:41:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:41:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:41:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:41:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:41:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:41:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:41:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:41:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:41:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:41:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:41:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:41:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:41:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:41:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:41:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:41:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:41:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:41:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:41:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:41:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:41:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:41:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:41:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:41:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:41:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:41:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:41:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:41:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:41:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:32,010 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:32,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293918449] [2021-05-06 11:41:32,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [293918449] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:32,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:32,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2021-05-06 11:41:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350429275] [2021-05-06 11:41:32,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 11:41:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:32,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 11:41:32,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1942, Invalid=6068, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 11:41:32,012 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand has 90 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:34,727 INFO L93 Difference]: Finished difference Result 620 states and 664 transitions. [2021-05-06 11:41:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 11:41:34,728 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 434 [2021-05-06 11:41:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:34,729 INFO L225 Difference]: With dead ends: 620 [2021-05-06 11:41:34,729 INFO L226 Difference]: Without dead ends: 440 [2021-05-06 11:41:34,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2918 ImplicationChecksByTransitivity, 3210.6ms TimeCoverageRelationStatistics Valid=3926, Invalid=13896, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 11:41:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-05-06 11:41:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2021-05-06 11:41:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 349 states have (on average 1.005730659025788) internal successors, (351), 350 states have internal predecessors, (351), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:41:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2021-05-06 11:41:34,807 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 434 [2021-05-06 11:41:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:34,807 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2021-05-06 11:41:34,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.477777777777778) internal successors, (223), 89 states have internal predecessors, (223), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2021-05-06 11:41:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-05-06 11:41:34,809 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:34,809 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:34,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-06 11:41:34,809 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -889261156, now seen corresponding path program 84 times [2021-05-06 11:41:34,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:34,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246581583] [2021-05-06 11:41:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:34,812 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:34,812 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:34,813 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:41:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:41:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:41:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:41:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:41:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:41:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:41:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:41:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:41:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:41:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:41:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:41:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:41:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:41:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:41:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:41:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:41:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:41:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:41:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:41:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:41:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:41:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:41:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:41:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:41:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:41:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:41:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:41:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:41:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:41:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:41:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:41:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:41:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:41:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:41:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:41:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:41:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:41:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:41:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:41:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:41:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:41:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:38,269 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:38,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246581583] [2021-05-06 11:41:38,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1246581583] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:38,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:38,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2021-05-06 11:41:38,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818417164] [2021-05-06 11:41:38,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 11:41:38,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 11:41:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8554, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 11:41:38,270 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 92 states have internal predecessors, (225), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:47,540 INFO L93 Difference]: Finished difference Result 452 states and 453 transitions. [2021-05-06 11:41:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 11:41:47,540 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 92 states have internal predecessors, (225), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 436 [2021-05-06 11:41:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:47,542 INFO L225 Difference]: With dead ends: 452 [2021-05-06 11:41:47,542 INFO L226 Difference]: Without dead ends: 450 [2021-05-06 11:41:47,544 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 5247.5ms TimeCoverageRelationStatistics Valid=377, Invalid=19083, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 11:41:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-05-06 11:41:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 447. [2021-05-06 11:41:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 355 states have (on average 1.0056338028169014) internal successors, (357), 356 states have internal predecessors, (357), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:41:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 448 transitions. [2021-05-06 11:41:47,612 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 448 transitions. Word has length 436 [2021-05-06 11:41:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:47,613 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 448 transitions. [2021-05-06 11:41:47,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 92 states have internal predecessors, (225), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:41:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 448 transitions. [2021-05-06 11:41:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-05-06 11:41:47,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:47,615 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:47,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-06 11:41:47,615 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1334051466, now seen corresponding path program 85 times [2021-05-06 11:41:47,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:47,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125465645] [2021-05-06 11:41:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:47,620 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:47,620 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:47,621 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-05-06 11:41:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:41:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:41:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:41:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:41:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:41:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:41:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:41:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:41:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:41:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:41:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:41:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:41:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:41:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:41:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:41:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:41:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:41:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:41:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:41:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:41:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:41:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:41:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:41:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:41:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:41:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:41:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:41:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:41:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:41:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:41:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:41:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:41:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:41:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:41:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:41:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:41:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:41:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:41:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:41:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:41:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:41:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:50,301 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:50,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125465645] [2021-05-06 11:41:50,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2125465645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:50,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:50,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2021-05-06 11:41:50,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531296084] [2021-05-06 11:41:50,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-06 11:41:50,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-06 11:41:50,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=6341, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 11:41:50,303 INFO L87 Difference]: Start difference. First operand 447 states and 448 transitions. Second operand has 92 states, 92 states have (on average 2.4782608695652173) internal successors, (228), 91 states have internal predecessors, (228), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:41:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:53,199 INFO L93 Difference]: Finished difference Result 634 states and 679 transitions. [2021-05-06 11:41:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 11:41:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.4782608695652173) internal successors, (228), 91 states have internal predecessors, (228), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 444 [2021-05-06 11:41:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:53,202 INFO L225 Difference]: With dead ends: 634 [2021-05-06 11:41:53,202 INFO L226 Difference]: Without dead ends: 450 [2021-05-06 11:41:53,203 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3052 ImplicationChecksByTransitivity, 3776.3ms TimeCoverageRelationStatistics Valid=4105, Invalid=14527, Unknown=0, NotChecked=0, Total=18632 [2021-05-06 11:41:53,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-05-06 11:41:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 449. [2021-05-06 11:41:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 357 states have (on average 1.0056022408963585) internal successors, (359), 358 states have internal predecessors, (359), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:41:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2021-05-06 11:41:53,287 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 444 [2021-05-06 11:41:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:53,287 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2021-05-06 11:41:53,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.4782608695652173) internal successors, (228), 91 states have internal predecessors, (228), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:41:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2021-05-06 11:41:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-05-06 11:41:53,289 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:53,289 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:53,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-06 11:41:53,289 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash -323754540, now seen corresponding path program 86 times [2021-05-06 11:41:53,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:53,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545858317] [2021-05-06 11:41:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:53,315 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:53,316 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:53,316 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:41:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:41:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:41:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:41:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:41:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:41:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:41:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:41:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:41:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:41:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:41:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:41:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:41:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:41:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:41:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:41:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:41:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:41:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:41:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:41:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:41:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:41:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:41:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:41:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:41:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:41:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:41:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:41:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:41:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:41:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:41:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:41:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:41:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:41:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:41:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:41:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:41:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:41:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:41:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:41:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:41:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:41:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:41:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:56,940 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:56,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545858317] [2021-05-06 11:41:56,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [545858317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:56,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:56,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2021-05-06 11:41:56,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397399702] [2021-05-06 11:41:56,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 11:41:56,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:56,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 11:41:56,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=8928, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 11:41:56,942 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand has 96 states, 95 states have (on average 2.4210526315789473) internal successors, (230), 94 states have internal predecessors, (230), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:42:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:06,509 INFO L93 Difference]: Finished difference Result 462 states and 463 transitions. [2021-05-06 11:42:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-06 11:42:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.4210526315789473) internal successors, (230), 94 states have internal predecessors, (230), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 446 [2021-05-06 11:42:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:06,511 INFO L225 Difference]: With dead ends: 462 [2021-05-06 11:42:06,511 INFO L226 Difference]: Without dead ends: 460 [2021-05-06 11:42:06,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 5410.2ms TimeCoverageRelationStatistics Valid=385, Invalid=19921, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 11:42:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-05-06 11:42:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 457. [2021-05-06 11:42:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 363 states have (on average 1.0055096418732783) internal successors, (365), 364 states have internal predecessors, (365), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2021-05-06 11:42:06,588 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 446 [2021-05-06 11:42:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:06,588 INFO L480 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2021-05-06 11:42:06,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 95 states have (on average 2.4210526315789473) internal successors, (230), 94 states have internal predecessors, (230), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:42:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2021-05-06 11:42:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-05-06 11:42:06,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:06,590 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:06,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-06 11:42:06,590 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:06,590 INFO L82 PathProgramCache]: Analyzing trace with hash -32032850, now seen corresponding path program 87 times [2021-05-06 11:42:06,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:06,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348369047] [2021-05-06 11:42:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:06,594 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:06,594 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:06,594 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-05-06 11:42:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:42:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:42:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:42:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:42:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:42:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:42:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:42:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:42:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:42:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:42:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:42:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:42:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:42:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:42:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:42:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:42:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:42:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:42:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:42:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:42:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:42:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:42:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:42:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:42:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:42:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:42:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:42:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:42:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:42:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:42:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:42:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:42:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:42:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:42:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:42:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:42:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:42:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:42:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:42:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:42:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:42:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:42:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:42:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:08,966 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:08,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348369047] [2021-05-06 11:42:08,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348369047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:08,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:08,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2021-05-06 11:42:08,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117049083] [2021-05-06 11:42:08,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 11:42:08,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:08,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 11:42:08,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2122, Invalid=6620, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 11:42:08,967 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand has 94 states, 94 states have (on average 2.478723404255319) internal successors, (233), 93 states have internal predecessors, (233), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:42:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:11,997 INFO L93 Difference]: Finished difference Result 648 states and 694 transitions. [2021-05-06 11:42:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-06 11:42:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.478723404255319) internal successors, (233), 93 states have internal predecessors, (233), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 454 [2021-05-06 11:42:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:11,999 INFO L225 Difference]: With dead ends: 648 [2021-05-06 11:42:11,999 INFO L226 Difference]: Without dead ends: 460 [2021-05-06 11:42:12,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3189 ImplicationChecksByTransitivity, 3575.6ms TimeCoverageRelationStatistics Valid=4288, Invalid=15172, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 11:42:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-05-06 11:42:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2021-05-06 11:42:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 365 states have (on average 1.0054794520547945) internal successors, (367), 366 states have internal predecessors, (367), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 460 transitions. [2021-05-06 11:42:12,072 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 460 transitions. Word has length 454 [2021-05-06 11:42:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:12,073 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 460 transitions. [2021-05-06 11:42:12,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.478723404255319) internal successors, (233), 93 states have internal predecessors, (233), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:42:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 460 transitions. [2021-05-06 11:42:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-05-06 11:42:12,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:12,075 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:12,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-06 11:42:12,075 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1886993780, now seen corresponding path program 88 times [2021-05-06 11:42:12,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:12,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852519561] [2021-05-06 11:42:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:12,078 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:12,078 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:12,078 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:42:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:42:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:42:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:42:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:42:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:42:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:42:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:42:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:42:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:42:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:42:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:42:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:42:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:42:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:42:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:42:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:42:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:42:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:42:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:42:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:42:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:42:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:42:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:42:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:42:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:42:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:42:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:42:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:42:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:42:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:42:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:42:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:42:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:42:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:42:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:42:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:42:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:42:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:42:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:42:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:42:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:42:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:42:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:42:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:15,805 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:15,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852519561] [2021-05-06 11:42:15,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852519561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:15,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:15,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2021-05-06 11:42:15,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481371808] [2021-05-06 11:42:15,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-06 11:42:15,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-06 11:42:15,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9310, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 11:42:15,807 INFO L87 Difference]: Start difference. First operand 459 states and 460 transitions. Second operand has 98 states, 97 states have (on average 2.422680412371134) internal successors, (235), 96 states have internal predecessors, (235), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:42:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:25,572 INFO L93 Difference]: Finished difference Result 472 states and 473 transitions. [2021-05-06 11:42:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 11:42:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.422680412371134) internal successors, (235), 96 states have internal predecessors, (235), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 456 [2021-05-06 11:42:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:25,574 INFO L225 Difference]: With dead ends: 472 [2021-05-06 11:42:25,574 INFO L226 Difference]: Without dead ends: 470 [2021-05-06 11:42:25,575 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 5570.8ms TimeCoverageRelationStatistics Valid=393, Invalid=20777, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 11:42:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-06 11:42:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 467. [2021-05-06 11:42:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 371 states have (on average 1.005390835579515) internal successors, (373), 372 states have internal predecessors, (373), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:42:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 468 transitions. [2021-05-06 11:42:25,647 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 468 transitions. Word has length 456 [2021-05-06 11:42:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:25,647 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 468 transitions. [2021-05-06 11:42:25,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 97 states have (on average 2.422680412371134) internal successors, (235), 96 states have internal predecessors, (235), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:42:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 468 transitions. [2021-05-06 11:42:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-05-06 11:42:25,649 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:25,649 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:25,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-06 11:42:25,649 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:25,650 INFO L82 PathProgramCache]: Analyzing trace with hash 259906662, now seen corresponding path program 89 times [2021-05-06 11:42:25,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:25,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908339852] [2021-05-06 11:42:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:25,653 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:25,653 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:25,653 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-05-06 11:42:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:42:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:42:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:42:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:42:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:42:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:42:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:42:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:42:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:42:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:42:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:42:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:42:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:42:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:42:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:42:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:42:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:42:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:42:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:42:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:42:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:42:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:42:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:42:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:42:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:42:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:42:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:42:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:42:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:42:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:42:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:42:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:42:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:42:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:42:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:42:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:42:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:42:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:42:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:42:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:42:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:42:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:42:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:42:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:42:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:28,251 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:28,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908339852] [2021-05-06 11:42:28,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1908339852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:28,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:28,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2021-05-06 11:42:28,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061303947] [2021-05-06 11:42:28,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 11:42:28,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:28,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 11:42:28,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=6905, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 11:42:28,252 INFO L87 Difference]: Start difference. First operand 467 states and 468 transitions. Second operand has 96 states, 96 states have (on average 2.4791666666666665) internal successors, (238), 95 states have internal predecessors, (238), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:31,374 INFO L93 Difference]: Finished difference Result 662 states and 709 transitions. [2021-05-06 11:42:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 11:42:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.4791666666666665) internal successors, (238), 95 states have internal predecessors, (238), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 464 [2021-05-06 11:42:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:31,376 INFO L225 Difference]: With dead ends: 662 [2021-05-06 11:42:31,376 INFO L226 Difference]: Without dead ends: 470 [2021-05-06 11:42:31,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3329 ImplicationChecksByTransitivity, 3827.5ms TimeCoverageRelationStatistics Valid=4475, Invalid=15831, Unknown=0, NotChecked=0, Total=20306 [2021-05-06 11:42:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-06 11:42:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2021-05-06 11:42:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 373 states have (on average 1.0053619302949062) internal successors, (375), 374 states have internal predecessors, (375), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:42:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 470 transitions. [2021-05-06 11:42:31,452 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 470 transitions. Word has length 464 [2021-05-06 11:42:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:31,452 INFO L480 AbstractCegarLoop]: Abstraction has 469 states and 470 transitions. [2021-05-06 11:42:31,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.4791666666666665) internal successors, (238), 95 states have internal predecessors, (238), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 470 transitions. [2021-05-06 11:42:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-05-06 11:42:31,454 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:31,454 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:31,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-06 11:42:31,454 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1222371780, now seen corresponding path program 90 times [2021-05-06 11:42:31,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:31,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502328948] [2021-05-06 11:42:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:31,457 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:31,458 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:31,458 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:42:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:42:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:42:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:42:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:42:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:42:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:42:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:42:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:42:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:42:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:42:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:42:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:42:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:42:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:42:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:42:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:42:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:42:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:42:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:42:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:42:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:42:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:42:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:42:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:42:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:42:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:42:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:42:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:42:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:42:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:42:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:42:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:42:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:42:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:42:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:42:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:42:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:42:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:42:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:42:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:42:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:42:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:42:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:42:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:42:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:35,339 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:35,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502328948] [2021-05-06 11:42:35,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [502328948] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:35,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:35,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2021-05-06 11:42:35,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162958002] [2021-05-06 11:42:35,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 11:42:35,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:35,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 11:42:35,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9700, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 11:42:35,341 INFO L87 Difference]: Start difference. First operand 469 states and 470 transitions. Second operand has 100 states, 99 states have (on average 2.4242424242424243) internal successors, (240), 98 states have internal predecessors, (240), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:45,745 INFO L93 Difference]: Finished difference Result 482 states and 483 transitions. [2021-05-06 11:42:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 11:42:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.4242424242424243) internal successors, (240), 98 states have internal predecessors, (240), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 466 [2021-05-06 11:42:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:45,747 INFO L225 Difference]: With dead ends: 482 [2021-05-06 11:42:45,747 INFO L226 Difference]: Without dead ends: 480 [2021-05-06 11:42:45,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 5831.2ms TimeCoverageRelationStatistics Valid=401, Invalid=21651, Unknown=0, NotChecked=0, Total=22052 [2021-05-06 11:42:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-05-06 11:42:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 477. [2021-05-06 11:42:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 379 states have (on average 1.0052770448548813) internal successors, (381), 380 states have internal predecessors, (381), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:42:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 478 transitions. [2021-05-06 11:42:45,824 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 478 transitions. Word has length 466 [2021-05-06 11:42:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:45,824 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 478 transitions. [2021-05-06 11:42:45,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 99 states have (on average 2.4242424242424243) internal successors, (240), 98 states have internal predecessors, (240), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:42:45,824 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 478 transitions. [2021-05-06 11:42:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-05-06 11:42:45,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:45,826 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:45,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-06 11:42:45,827 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2142522270, now seen corresponding path program 91 times [2021-05-06 11:42:45,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:45,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139351599] [2021-05-06 11:42:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:45,830 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:45,830 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:45,830 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-05-06 11:42:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:42:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:42:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:42:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:42:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:42:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:42:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:42:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:42:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:42:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:42:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:42:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:42:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:42:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:42:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:42:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:42:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:42:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:42:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:42:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:42:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:42:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:42:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:42:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:42:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:42:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:42:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:42:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:42:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:42:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:42:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:42:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:42:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:42:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:42:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:42:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:42:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:42:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:42:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:42:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:42:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:42:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:42:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:42:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:42:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:42:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:48,322 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:48,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139351599] [2021-05-06 11:42:48,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1139351599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:48,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:48,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2021-05-06 11:42:48,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928920489] [2021-05-06 11:42:48,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-06 11:42:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-06 11:42:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2310, Invalid=7196, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 11:42:48,324 INFO L87 Difference]: Start difference. First operand 477 states and 478 transitions. Second operand has 98 states, 98 states have (on average 2.479591836734694) internal successors, (243), 97 states have internal predecessors, (243), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:42:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:51,503 INFO L93 Difference]: Finished difference Result 676 states and 724 transitions. [2021-05-06 11:42:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 11:42:51,504 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.479591836734694) internal successors, (243), 97 states have internal predecessors, (243), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 474 [2021-05-06 11:42:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:51,505 INFO L225 Difference]: With dead ends: 676 [2021-05-06 11:42:51,505 INFO L226 Difference]: Without dead ends: 480 [2021-05-06 11:42:51,507 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3472 ImplicationChecksByTransitivity, 3778.2ms TimeCoverageRelationStatistics Valid=4666, Invalid=16504, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 11:42:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-05-06 11:42:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-05-06 11:42:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 381 states have (on average 1.005249343832021) internal successors, (383), 382 states have internal predecessors, (383), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:42:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2021-05-06 11:42:51,582 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 474 [2021-05-06 11:42:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:51,582 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2021-05-06 11:42:51,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.479591836734694) internal successors, (243), 97 states have internal predecessors, (243), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:42:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2021-05-06 11:42:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-05-06 11:42:51,584 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:51,584 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:51,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-06 11:42:51,585 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:51,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1688189820, now seen corresponding path program 92 times [2021-05-06 11:42:51,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:51,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417566152] [2021-05-06 11:42:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:51,588 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:42:51,588 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:42:51,588 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:42:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:42:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:42:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:42:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:42:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:42:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:42:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:42:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:42:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:42:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:42:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:42:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:42:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:42:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:42:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:42:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:42:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:42:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:42:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:42:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:42:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:42:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:42:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:42:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:42:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:42:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:42:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:42:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:42:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:42:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:42:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:42:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:42:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:42:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:42:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:42:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:42:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:42:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:42:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:42:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:42:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:42:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:42:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:42:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:42:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:42:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:55,554 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:55,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417566152] [2021-05-06 11:42:55,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [417566152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:55,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:55,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2021-05-06 11:42:55,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644182527] [2021-05-06 11:42:55,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 11:42:55,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 11:42:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10098, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 11:42:55,556 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand has 102 states, 101 states have (on average 2.4257425742574257) internal successors, (245), 100 states have internal predecessors, (245), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:43:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:06,232 INFO L93 Difference]: Finished difference Result 492 states and 493 transitions. [2021-05-06 11:43:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 11:43:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.4257425742574257) internal successors, (245), 100 states have internal predecessors, (245), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 476 [2021-05-06 11:43:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:06,233 INFO L225 Difference]: With dead ends: 492 [2021-05-06 11:43:06,233 INFO L226 Difference]: Without dead ends: 490 [2021-05-06 11:43:06,234 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 6005.6ms TimeCoverageRelationStatistics Valid=409, Invalid=22543, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 11:43:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-05-06 11:43:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 487. [2021-05-06 11:43:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 387 states have (on average 1.0051679586563307) internal successors, (389), 388 states have internal predecessors, (389), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 488 transitions. [2021-05-06 11:43:06,313 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 488 transitions. Word has length 476 [2021-05-06 11:43:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:06,313 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 488 transitions. [2021-05-06 11:43:06,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 101 states have (on average 2.4257425742574257) internal successors, (245), 100 states have internal predecessors, (245), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:43:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 488 transitions. [2021-05-06 11:43:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-05-06 11:43:06,315 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:06,316 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:06,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-06 11:43:06,316 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1740184234, now seen corresponding path program 93 times [2021-05-06 11:43:06,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:06,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941517581] [2021-05-06 11:43:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:06,319 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:06,319 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:06,320 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:43:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-05-06 11:43:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:43:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:43:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:43:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:43:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:43:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:43:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:43:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:43:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:43:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:43:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:43:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:43:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:43:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:43:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:43:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:43:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:43:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:43:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:43:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:43:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:43:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:43:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:43:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:43:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:43:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:43:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:43:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:43:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:43:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:43:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:43:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:43:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:43:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:43:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:43:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:43:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:43:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:43:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:43:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:43:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:43:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:43:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:43:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:43:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:43:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:43:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:43:08,949 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:43:08,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941517581] [2021-05-06 11:43:08,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1941517581] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:43:08,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:43:08,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2021-05-06 11:43:08,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386355384] [2021-05-06 11:43:08,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 11:43:08,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:43:08,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 11:43:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2407, Invalid=7493, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 11:43:08,951 INFO L87 Difference]: Start difference. First operand 487 states and 488 transitions. Second operand has 100 states, 100 states have (on average 2.48) internal successors, (248), 99 states have internal predecessors, (248), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:43:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:12,249 INFO L93 Difference]: Finished difference Result 690 states and 739 transitions. [2021-05-06 11:43:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-06 11:43:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.48) internal successors, (248), 99 states have internal predecessors, (248), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 484 [2021-05-06 11:43:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:12,251 INFO L225 Difference]: With dead ends: 690 [2021-05-06 11:43:12,251 INFO L226 Difference]: Without dead ends: 490 [2021-05-06 11:43:12,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 3957.3ms TimeCoverageRelationStatistics Valid=4861, Invalid=17191, Unknown=0, NotChecked=0, Total=22052 [2021-05-06 11:43:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-05-06 11:43:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2021-05-06 11:43:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 389 states have (on average 1.0051413881748072) internal successors, (391), 390 states have internal predecessors, (391), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2021-05-06 11:43:12,332 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 484 [2021-05-06 11:43:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:12,332 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2021-05-06 11:43:12,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.48) internal successors, (248), 99 states have internal predecessors, (248), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:43:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2021-05-06 11:43:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-05-06 11:43:12,334 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:12,334 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:12,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-06 11:43:12,335 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:12,335 INFO L82 PathProgramCache]: Analyzing trace with hash -616130636, now seen corresponding path program 94 times [2021-05-06 11:43:12,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:12,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745081838] [2021-05-06 11:43:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:12,341 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:12,341 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:12,341 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:43:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:43:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:43:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:43:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:43:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:43:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:43:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:43:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:43:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:43:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:43:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:43:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:43:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:43:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:43:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:43:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:43:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:43:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:43:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:43:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:43:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:43:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:43:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:43:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:43:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:43:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:43:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:43:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:43:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:43:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:43:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:43:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:43:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:43:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:43:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:43:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:43:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:43:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:43:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:43:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:43:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:43:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:43:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:43:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:43:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:43:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:43:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:43:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:43:16,504 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:43:16,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745081838] [2021-05-06 11:43:16,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745081838] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:43:16,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:43:16,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2021-05-06 11:43:16,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083452032] [2021-05-06 11:43:16,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-06 11:43:16,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:43:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-06 11:43:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10504, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 11:43:16,506 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand has 104 states, 103 states have (on average 2.4271844660194173) internal successors, (250), 102 states have internal predecessors, (250), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:43:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:27,901 INFO L93 Difference]: Finished difference Result 502 states and 503 transitions. [2021-05-06 11:43:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 11:43:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.4271844660194173) internal successors, (250), 102 states have internal predecessors, (250), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 486 [2021-05-06 11:43:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:27,903 INFO L225 Difference]: With dead ends: 502 [2021-05-06 11:43:27,903 INFO L226 Difference]: Without dead ends: 500 [2021-05-06 11:43:27,904 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 6239.5ms TimeCoverageRelationStatistics Valid=417, Invalid=23453, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 11:43:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-05-06 11:43:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2021-05-06 11:43:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 395 states have (on average 1.0050632911392405) internal successors, (397), 396 states have internal predecessors, (397), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:43:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2021-05-06 11:43:27,993 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 486 [2021-05-06 11:43:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:27,993 INFO L480 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2021-05-06 11:43:27,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 103 states have (on average 2.4271844660194173) internal successors, (250), 102 states have internal predecessors, (250), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:43:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2021-05-06 11:43:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2021-05-06 11:43:27,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:27,996 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:27,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-06 11:43:27,996 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:27,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1196034446, now seen corresponding path program 95 times [2021-05-06 11:43:27,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:27,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446067907] [2021-05-06 11:43:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:28,001 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:28,001 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:28,002 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:43:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-05-06 11:43:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:43:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:43:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:43:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:43:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:43:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:43:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:43:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:43:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:43:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:43:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:43:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:43:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:43:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:43:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:43:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:43:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:43:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:43:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:43:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:43:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:43:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:43:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:43:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:43:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:43:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:43:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:43:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:43:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:43:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:43:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:43:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:43:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:43:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:43:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:43:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:43:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:43:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:43:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:43:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:43:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:43:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:43:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:43:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:43:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:43:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:43:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:43:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:43:30,697 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:43:30,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446067907] [2021-05-06 11:43:30,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [446067907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:43:30,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:43:30,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2021-05-06 11:43:30,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009408974] [2021-05-06 11:43:30,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 11:43:30,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:43:30,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 11:43:30,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2506, Invalid=7796, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 11:43:30,699 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand has 102 states, 102 states have (on average 2.480392156862745) internal successors, (253), 101 states have internal predecessors, (253), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:34,096 INFO L93 Difference]: Finished difference Result 704 states and 754 transitions. [2021-05-06 11:43:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 11:43:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.480392156862745) internal successors, (253), 101 states have internal predecessors, (253), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 494 [2021-05-06 11:43:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:34,102 INFO L225 Difference]: With dead ends: 704 [2021-05-06 11:43:34,103 INFO L226 Difference]: Without dead ends: 500 [2021-05-06 11:43:34,104 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 4075.2ms TimeCoverageRelationStatistics Valid=5060, Invalid=17892, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 11:43:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-05-06 11:43:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2021-05-06 11:43:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 397 states have (on average 1.0050377833753148) internal successors, (399), 398 states have internal predecessors, (399), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:43:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 500 transitions. [2021-05-06 11:43:34,186 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 500 transitions. Word has length 494 [2021-05-06 11:43:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:34,186 INFO L480 AbstractCegarLoop]: Abstraction has 499 states and 500 transitions. [2021-05-06 11:43:34,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.480392156862745) internal successors, (253), 101 states have internal predecessors, (253), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 500 transitions. [2021-05-06 11:43:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-05-06 11:43:34,188 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:34,188 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:34,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-06 11:43:34,189 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -942875028, now seen corresponding path program 96 times [2021-05-06 11:43:34,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:34,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494135762] [2021-05-06 11:43:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:34,192 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:34,192 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:34,192 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:43:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:43:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:43:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:43:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:43:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:43:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:43:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:43:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:43:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:43:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:43:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:43:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:43:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:43:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:43:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:43:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:43:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:43:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:43:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:43:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:43:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:43:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:43:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:43:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:43:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:43:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:43:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:43:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:43:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:43:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:43:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:43:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:43:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:43:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:43:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:43:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:43:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:43:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:43:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:43:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:43:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:43:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:43:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:43:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:43:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:43:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:43:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:43:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:43:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:43:38,637 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:43:38,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494135762] [2021-05-06 11:43:38,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [494135762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:43:38,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:43:38,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2021-05-06 11:43:38,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454239373] [2021-05-06 11:43:38,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 11:43:38,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:43:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 11:43:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=10918, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 11:43:38,639 INFO L87 Difference]: Start difference. First operand 499 states and 500 transitions. Second operand has 106 states, 105 states have (on average 2.4285714285714284) internal successors, (255), 104 states have internal predecessors, (255), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:50,257 INFO L93 Difference]: Finished difference Result 512 states and 513 transitions. [2021-05-06 11:43:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 11:43:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.4285714285714284) internal successors, (255), 104 states have internal predecessors, (255), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 496 [2021-05-06 11:43:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:50,259 INFO L225 Difference]: With dead ends: 512 [2021-05-06 11:43:50,259 INFO L226 Difference]: Without dead ends: 510 [2021-05-06 11:43:50,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 6594.1ms TimeCoverageRelationStatistics Valid=425, Invalid=24381, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 11:43:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-05-06 11:43:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 507. [2021-05-06 11:43:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 403 states have (on average 1.0049627791563276) internal successors, (405), 404 states have internal predecessors, (405), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:43:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 508 transitions. [2021-05-06 11:43:50,344 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 508 transitions. Word has length 496 [2021-05-06 11:43:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:50,345 INFO L480 AbstractCegarLoop]: Abstraction has 507 states and 508 transitions. [2021-05-06 11:43:50,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 105 states have (on average 2.4285714285714284) internal successors, (255), 104 states have internal predecessors, (255), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:43:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 508 transitions. [2021-05-06 11:43:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-05-06 11:43:50,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:50,347 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:50,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-06 11:43:50,347 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1789257658, now seen corresponding path program 97 times [2021-05-06 11:43:50,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:50,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188518882] [2021-05-06 11:43:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:50,352 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:50,352 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:50,353 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:43:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-05-06 11:43:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:43:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:43:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:43:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:43:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:43:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:43:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:43:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:43:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:43:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:43:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:43:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:43:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:43:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:43:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:43:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:43:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:43:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:43:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:43:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:43:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:43:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:43:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:43:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:43:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:43:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:43:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:43:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:43:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:43:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:43:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:43:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:43:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:43:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:43:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:43:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:43:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:43:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:43:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:43:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:43:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:43:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:43:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:43:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:43:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:43:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-05-06 11:43:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:43:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:43:53,130 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:43:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188518882] [2021-05-06 11:43:53,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1188518882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:43:53,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:43:53,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2021-05-06 11:43:53,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000777389] [2021-05-06 11:43:53,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-06 11:43:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:43:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-06 11:43:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2607, Invalid=8105, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 11:43:53,132 INFO L87 Difference]: Start difference. First operand 507 states and 508 transitions. Second operand has 104 states, 104 states have (on average 2.480769230769231) internal successors, (258), 103 states have internal predecessors, (258), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:43:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:43:56,727 INFO L93 Difference]: Finished difference Result 718 states and 769 transitions. [2021-05-06 11:43:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 11:43:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.480769230769231) internal successors, (258), 103 states have internal predecessors, (258), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 504 [2021-05-06 11:43:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:43:56,729 INFO L225 Difference]: With dead ends: 718 [2021-05-06 11:43:56,729 INFO L226 Difference]: Without dead ends: 510 [2021-05-06 11:43:56,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3919 ImplicationChecksByTransitivity, 4249.4ms TimeCoverageRelationStatistics Valid=5263, Invalid=18607, Unknown=0, NotChecked=0, Total=23870 [2021-05-06 11:43:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-05-06 11:43:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 509. [2021-05-06 11:43:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 405 states have (on average 1.0049382716049382) internal successors, (407), 406 states have internal predecessors, (407), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:43:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 510 transitions. [2021-05-06 11:43:56,817 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 510 transitions. Word has length 504 [2021-05-06 11:43:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:43:56,817 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 510 transitions. [2021-05-06 11:43:56,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.480769230769231) internal successors, (258), 103 states have internal predecessors, (258), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:43:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 510 transitions. [2021-05-06 11:43:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-05-06 11:43:56,819 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:43:56,819 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:43:56,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-06 11:43:56,819 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:43:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:43:56,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1572269988, now seen corresponding path program 98 times [2021-05-06 11:43:56,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:43:56,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217919855] [2021-05-06 11:43:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:43:56,824 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:43:56,824 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:43:56,824 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:43:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:44:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:44:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:44:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:44:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:44:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:44:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:44:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:44:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:44:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:44:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:44:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:44:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:44:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:44:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:44:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:44:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:44:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:44:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:44:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:44:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:44:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:44:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:44:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:44:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:44:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:44:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:44:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:44:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:44:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:44:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:44:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:44:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:44:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:44:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:44:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:44:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:44:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:44:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:44:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:44:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:44:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:44:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:44:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:44:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:44:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:44:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:44:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:44:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:44:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:44:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:44:01,325 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:44:01,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217919855] [2021-05-06 11:44:01,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1217919855] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:44:01,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:44:01,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2021-05-06 11:44:01,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429620317] [2021-05-06 11:44:01,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 11:44:01,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:44:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 11:44:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=11340, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 11:44:01,327 INFO L87 Difference]: Start difference. First operand 509 states and 510 transitions. Second operand has 108 states, 107 states have (on average 2.4299065420560746) internal successors, (260), 106 states have internal predecessors, (260), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:44:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:44:13,550 INFO L93 Difference]: Finished difference Result 522 states and 523 transitions. [2021-05-06 11:44:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-06 11:44:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.4299065420560746) internal successors, (260), 106 states have internal predecessors, (260), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 506 [2021-05-06 11:44:13,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:44:13,552 INFO L225 Difference]: With dead ends: 522 [2021-05-06 11:44:13,552 INFO L226 Difference]: Without dead ends: 520 [2021-05-06 11:44:13,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 6813.8ms TimeCoverageRelationStatistics Valid=433, Invalid=25327, Unknown=0, NotChecked=0, Total=25760 [2021-05-06 11:44:13,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-05-06 11:44:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 517. [2021-05-06 11:44:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 411 states have (on average 1.0048661800486618) internal successors, (413), 412 states have internal predecessors, (413), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:44:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 518 transitions. [2021-05-06 11:44:13,640 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 518 transitions. Word has length 506 [2021-05-06 11:44:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:44:13,641 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 518 transitions. [2021-05-06 11:44:13,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 107 states have (on average 2.4299065420560746) internal successors, (260), 106 states have internal predecessors, (260), 51 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:44:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 518 transitions. [2021-05-06 11:44:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2021-05-06 11:44:13,649 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:44:13,649 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:44:13,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-06 11:44:13,650 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:44:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:44:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1684311682, now seen corresponding path program 99 times [2021-05-06 11:44:13,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:44:13,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250123494] [2021-05-06 11:44:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:44:13,658 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:44:13,658 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:44:13,659 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:44:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:44:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-05-06 11:44:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:44:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:44:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:44:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:44:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:44:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:44:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:44:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:44:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:44:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:44:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:44:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:44:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:44:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:44:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:44:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:44:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:44:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:44:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:44:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:44:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:44:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:44:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:44:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:44:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:44:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:44:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:44:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:44:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:44:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:44:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:44:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:44:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:44:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:44:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:44:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:44:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:44:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:44:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:44:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:44:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:44:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:44:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:44:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:44:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:44:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:44:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:44:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:44:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-05-06 11:44:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:44:16,569 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:44:16,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250123494] [2021-05-06 11:44:16,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250123494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:44:16,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:44:16,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2021-05-06 11:44:16,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893035390] [2021-05-06 11:44:16,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 11:44:16,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:44:16,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 11:44:16,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2710, Invalid=8420, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 11:44:16,570 INFO L87 Difference]: Start difference. First operand 517 states and 518 transitions. Second operand has 106 states, 106 states have (on average 2.481132075471698) internal successors, (263), 105 states have internal predecessors, (263), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:44:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:44:20,306 INFO L93 Difference]: Finished difference Result 732 states and 784 transitions. [2021-05-06 11:44:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-06 11:44:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.481132075471698) internal successors, (263), 105 states have internal predecessors, (263), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 514 [2021-05-06 11:44:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:44:20,309 INFO L225 Difference]: With dead ends: 732 [2021-05-06 11:44:20,309 INFO L226 Difference]: Without dead ends: 520 [2021-05-06 11:44:20,310 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4074 ImplicationChecksByTransitivity, 4422.2ms TimeCoverageRelationStatistics Valid=5470, Invalid=19336, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 11:44:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-05-06 11:44:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 519. [2021-05-06 11:44:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 413 states have (on average 1.0048426150121066) internal successors, (415), 414 states have internal predecessors, (415), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:44:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 520 transitions. [2021-05-06 11:44:20,407 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 520 transitions. Word has length 514 [2021-05-06 11:44:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:44:20,407 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 520 transitions. [2021-05-06 11:44:20,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.481132075471698) internal successors, (263), 105 states have internal predecessors, (263), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:44:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 520 transitions. [2021-05-06 11:44:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-05-06 11:44:20,409 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:44:20,409 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:44:20,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-06 11:44:20,409 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:44:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:44:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1594960732, now seen corresponding path program 100 times [2021-05-06 11:44:20,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:44:20,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472767644] [2021-05-06 11:44:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:44:20,416 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:44:20,416 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:44:20,417 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:44:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:44:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:44:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:44:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:44:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:44:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:44:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:44:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:44:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:44:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:44:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:44:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:44:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:44:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:44:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:44:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:44:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:44:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:44:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:44:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:44:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:44:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:44:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:44:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:44:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:44:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:44:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:44:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:44:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:44:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:44:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:44:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:44:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:44:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:44:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:44:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:44:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:44:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:44:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:44:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:44:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:44:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:44:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:44:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:44:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:44:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:44:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:44:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:44:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:44:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:44:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:44:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:44:25,059 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:44:25,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472767644] [2021-05-06 11:44:25,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [472767644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:44:25,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:44:25,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2021-05-06 11:44:25,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678093896] [2021-05-06 11:44:25,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-06 11:44:25,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:44:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-06 11:44:25,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=11770, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 11:44:25,061 INFO L87 Difference]: Start difference. First operand 519 states and 520 transitions. Second operand has 110 states, 109 states have (on average 2.4311926605504586) internal successors, (265), 108 states have internal predecessors, (265), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:44:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:44:37,491 INFO L93 Difference]: Finished difference Result 532 states and 533 transitions. [2021-05-06 11:44:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 11:44:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.4311926605504586) internal successors, (265), 108 states have internal predecessors, (265), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 516 [2021-05-06 11:44:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:44:37,493 INFO L225 Difference]: With dead ends: 532 [2021-05-06 11:44:37,493 INFO L226 Difference]: Without dead ends: 530 [2021-05-06 11:44:37,494 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 7021.4ms TimeCoverageRelationStatistics Valid=441, Invalid=26291, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 11:44:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-05-06 11:44:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 527. [2021-05-06 11:44:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 419 states have (on average 1.0047732696897376) internal successors, (421), 420 states have internal predecessors, (421), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:44:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 528 transitions. [2021-05-06 11:44:37,586 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 528 transitions. Word has length 516 [2021-05-06 11:44:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:44:37,586 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 528 transitions. [2021-05-06 11:44:37,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 110 states, 109 states have (on average 2.4311926605504586) internal successors, (265), 108 states have internal predecessors, (265), 52 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:44:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 528 transitions. [2021-05-06 11:44:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2021-05-06 11:44:37,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:44:37,588 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:44:37,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-06 11:44:37,588 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:44:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:44:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash -105220810, now seen corresponding path program 101 times [2021-05-06 11:44:37,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:44:37,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996587333] [2021-05-06 11:44:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:44:37,592 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:44:37,592 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:44:37,592 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:44:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:44:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-05-06 11:44:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:44:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:44:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:44:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:44:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:44:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:44:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:44:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:44:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:44:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:44:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:44:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:44:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:44:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:44:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:44:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:44:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:44:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:44:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:44:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:44:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:44:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:44:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:44:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:44:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:44:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:44:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:44:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:44:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:44:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:44:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:44:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:44:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:44:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:44:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:44:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:44:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:44:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:44:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:44:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:44:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:44:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:44:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:44:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:44:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:44:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:44:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:44:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:44:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:44:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-05-06 11:44:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:44:40,621 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:44:40,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996587333] [2021-05-06 11:44:40,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1996587333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:44:40,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:44:40,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2021-05-06 11:44:40,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746739627] [2021-05-06 11:44:40,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 11:44:40,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:44:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 11:44:40,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=8741, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 11:44:40,622 INFO L87 Difference]: Start difference. First operand 527 states and 528 transitions. Second operand has 108 states, 108 states have (on average 2.4814814814814814) internal successors, (268), 107 states have internal predecessors, (268), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:44:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:44:44,361 INFO L93 Difference]: Finished difference Result 746 states and 799 transitions. [2021-05-06 11:44:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 11:44:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.4814814814814814) internal successors, (268), 107 states have internal predecessors, (268), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 524 [2021-05-06 11:44:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:44:44,363 INFO L225 Difference]: With dead ends: 746 [2021-05-06 11:44:44,363 INFO L226 Difference]: Without dead ends: 530 [2021-05-06 11:44:44,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4232 ImplicationChecksByTransitivity, 4574.1ms TimeCoverageRelationStatistics Valid=5681, Invalid=20079, Unknown=0, NotChecked=0, Total=25760 [2021-05-06 11:44:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-05-06 11:44:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 529. [2021-05-06 11:44:44,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 421 states have (on average 1.004750593824228) internal successors, (423), 422 states have internal predecessors, (423), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:44:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 530 transitions. [2021-05-06 11:44:44,464 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 530 transitions. Word has length 524 [2021-05-06 11:44:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:44:44,464 INFO L480 AbstractCegarLoop]: Abstraction has 529 states and 530 transitions. [2021-05-06 11:44:44,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.4814814814814814) internal successors, (268), 107 states have internal predecessors, (268), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:44:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 530 transitions. [2021-05-06 11:44:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-05-06 11:44:44,467 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:44:44,467 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:44:44,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-06 11:44:44,467 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:44:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:44:44,467 INFO L82 PathProgramCache]: Analyzing trace with hash 309326228, now seen corresponding path program 102 times [2021-05-06 11:44:44,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:44:44,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569157954] [2021-05-06 11:44:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:44:44,470 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:44:44,470 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:44:44,471 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:44:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:44:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:44:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:44:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:44:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:44:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:44:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:44:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:44:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:44:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:44:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:44:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:44:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:44:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:44:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:44:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:44:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:44:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:44:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:44:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:44:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:44:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:44:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:44:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:44:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:44:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:44:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:44:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:44:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:44:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:44:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:44:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:44:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:44:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:44:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:44:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:44:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:44:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:44:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:44:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:44:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:44:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:44:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:44:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:44:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:44:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:44:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:44:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:44:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2021-05-06 11:44:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-05-06 11:44:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2021-05-06 11:44:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2021-05-06 11:44:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:44:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:44:49,274 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:44:49,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569157954] [2021-05-06 11:44:49,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1569157954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:44:49,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:44:49,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2021-05-06 11:44:49,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467505250] [2021-05-06 11:44:49,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 11:44:49,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:44:49,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 11:44:49,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=12208, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 11:44:49,276 INFO L87 Difference]: Start difference. First operand 529 states and 530 transitions. Second operand has 112 states, 111 states have (on average 2.4324324324324325) internal successors, (270), 110 states have internal predecessors, (270), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:45:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:45:02,375 INFO L93 Difference]: Finished difference Result 542 states and 543 transitions. [2021-05-06 11:45:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 11:45:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.4324324324324325) internal successors, (270), 110 states have internal predecessors, (270), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 526 [2021-05-06 11:45:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:45:02,376 INFO L225 Difference]: With dead ends: 542 [2021-05-06 11:45:02,376 INFO L226 Difference]: Without dead ends: 540 [2021-05-06 11:45:02,378 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 7413.1ms TimeCoverageRelationStatistics Valid=449, Invalid=27273, Unknown=0, NotChecked=0, Total=27722 [2021-05-06 11:45:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-05-06 11:45:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 537. [2021-05-06 11:45:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 427 states have (on average 1.0046838407494145) internal successors, (429), 428 states have internal predecessors, (429), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 538 transitions. [2021-05-06 11:45:02,481 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 538 transitions. Word has length 526 [2021-05-06 11:45:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:45:02,481 INFO L480 AbstractCegarLoop]: Abstraction has 537 states and 538 transitions. [2021-05-06 11:45:02,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 111 states have (on average 2.4324324324324325) internal successors, (270), 110 states have internal predecessors, (270), 53 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:45:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 538 transitions. [2021-05-06 11:45:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-05-06 11:45:02,483 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:45:02,483 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:45:02,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-06 11:45:02,483 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:45:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:45:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash -873757842, now seen corresponding path program 103 times [2021-05-06 11:45:02,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:45:02,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016517273] [2021-05-06 11:45:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:45:02,494 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:45:02,495 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:45:02,495 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:45:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:45:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-05-06 11:45:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:45:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:45:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:45:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:45:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:45:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:45:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:45:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:45:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:45:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:45:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:45:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:45:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:45:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:45:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:45:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:45:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:45:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:45:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:45:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:45:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:45:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:45:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:45:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:45:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:45:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:45:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:45:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:45:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:45:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:45:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:45:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:45:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:45:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:45:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:45:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:45:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:45:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:45:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:45:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:45:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:45:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:45:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:45:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:45:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:45:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:45:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2021-05-06 11:45:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-05-06 11:45:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2021-05-06 11:45:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2021-05-06 11:45:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2021-05-06 11:45:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:45:05,753 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:45:05,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016517273] [2021-05-06 11:45:05,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1016517273] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:45:05,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:45:05,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2021-05-06 11:45:05,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645772235] [2021-05-06 11:45:05,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-06 11:45:05,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:45:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-06 11:45:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2922, Invalid=9068, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 11:45:05,757 INFO L87 Difference]: Start difference. First operand 537 states and 538 transitions. Second operand has 110 states, 110 states have (on average 2.481818181818182) internal successors, (273), 109 states have internal predecessors, (273), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:45:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:45:10,178 INFO L93 Difference]: Finished difference Result 760 states and 814 transitions. [2021-05-06 11:45:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 11:45:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.481818181818182) internal successors, (273), 109 states have internal predecessors, (273), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 534 [2021-05-06 11:45:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:45:10,180 INFO L225 Difference]: With dead ends: 760 [2021-05-06 11:45:10,180 INFO L226 Difference]: Without dead ends: 540 [2021-05-06 11:45:10,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 4972.8ms TimeCoverageRelationStatistics Valid=5896, Invalid=20836, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 11:45:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-05-06 11:45:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2021-05-06 11:45:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 429 states have (on average 1.0046620046620047) internal successors, (431), 430 states have internal predecessors, (431), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 540 transitions. [2021-05-06 11:45:10,281 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 540 transitions. Word has length 534 [2021-05-06 11:45:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:45:10,281 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 540 transitions. [2021-05-06 11:45:10,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 110 states, 110 states have (on average 2.481818181818182) internal successors, (273), 109 states have internal predecessors, (273), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:45:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 540 transitions. [2021-05-06 11:45:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2021-05-06 11:45:10,283 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:45:10,283 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:45:10,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-06 11:45:10,283 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:45:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:45:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1192254900, now seen corresponding path program 104 times [2021-05-06 11:45:10,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:45:10,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584881536] [2021-05-06 11:45:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:45:10,287 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:45:10,287 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:45:10,287 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:45:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:45:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:45:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:45:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:45:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:45:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:45:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:45:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:45:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:45:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:45:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:45:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:45:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:45:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:45:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:45:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:45:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:45:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:45:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:45:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:45:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:45:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:45:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:45:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:45:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:45:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:45:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:45:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:45:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:45:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:45:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:45:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:45:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:45:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:45:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:45:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:45:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:45:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:45:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:45:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:45:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:45:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:45:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:45:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:45:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:45:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:45:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:45:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:45:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-05-06 11:45:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2021-05-06 11:45:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2021-05-06 11:45:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2021-05-06 11:45:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2021-05-06 11:45:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:45:15,677 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:45:15,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584881536] [2021-05-06 11:45:15,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1584881536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:45:15,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:45:15,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2021-05-06 11:45:15,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080967022] [2021-05-06 11:45:15,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 11:45:15,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:45:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 11:45:15,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=12654, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 11:45:15,679 INFO L87 Difference]: Start difference. First operand 539 states and 540 transitions. Second operand has 114 states, 113 states have (on average 2.433628318584071) internal successors, (275), 112 states have internal predecessors, (275), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:45:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:45:30,223 INFO L93 Difference]: Finished difference Result 552 states and 553 transitions. [2021-05-06 11:45:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 11:45:30,223 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.433628318584071) internal successors, (275), 112 states have internal predecessors, (275), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 536 [2021-05-06 11:45:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:45:30,224 INFO L225 Difference]: With dead ends: 552 [2021-05-06 11:45:30,224 INFO L226 Difference]: Without dead ends: 550 [2021-05-06 11:45:30,225 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1767 ImplicationChecksByTransitivity, 8088.7ms TimeCoverageRelationStatistics Valid=457, Invalid=28273, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 11:45:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-05-06 11:45:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 547. [2021-05-06 11:45:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 435 states have (on average 1.0045977011494254) internal successors, (437), 436 states have internal predecessors, (437), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:45:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 548 transitions. [2021-05-06 11:45:30,324 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 548 transitions. Word has length 536 [2021-05-06 11:45:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:45:30,324 INFO L480 AbstractCegarLoop]: Abstraction has 547 states and 548 transitions. [2021-05-06 11:45:30,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 113 states have (on average 2.433628318584071) internal successors, (275), 112 states have internal predecessors, (275), 54 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:45:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 548 transitions. [2021-05-06 11:45:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-05-06 11:45:30,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:45:30,326 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:45:30,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-06 11:45:30,326 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:45:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:45:30,327 INFO L82 PathProgramCache]: Analyzing trace with hash 552270886, now seen corresponding path program 105 times [2021-05-06 11:45:30,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:45:30,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015512439] [2021-05-06 11:45:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:45:30,330 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:45:30,330 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:45:30,330 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:45:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:45:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-05-06 11:45:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:45:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:45:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:45:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:45:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:45:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:45:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:45:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:45:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:45:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:45:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:45:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:45:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:45:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:45:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:45:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:45:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:45:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:45:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:45:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:45:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:45:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:45:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:45:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:45:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:45:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:45:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:45:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:45:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:45:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:45:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:45:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:45:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:45:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:45:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:45:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:45:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:45:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:45:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:45:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:45:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:45:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:45:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:45:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:45:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:45:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:45:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-05-06 11:45:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2021-05-06 11:45:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2021-05-06 11:45:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2021-05-06 11:45:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2021-05-06 11:45:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2021-05-06 11:45:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:45:33,619 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:45:33,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015512439] [2021-05-06 11:45:33,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015512439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:45:33,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:45:33,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2021-05-06 11:45:33,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571648208] [2021-05-06 11:45:33,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 11:45:33,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:45:33,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 11:45:33,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3031, Invalid=9401, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 11:45:33,621 INFO L87 Difference]: Start difference. First operand 547 states and 548 transitions. Second operand has 112 states, 112 states have (on average 2.482142857142857) internal successors, (278), 111 states have internal predecessors, (278), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:45:37,988 INFO L93 Difference]: Finished difference Result 774 states and 829 transitions. [2021-05-06 11:45:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-06 11:45:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.482142857142857) internal successors, (278), 111 states have internal predecessors, (278), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 544 [2021-05-06 11:45:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:45:37,990 INFO L225 Difference]: With dead ends: 774 [2021-05-06 11:45:37,990 INFO L226 Difference]: Without dead ends: 550 [2021-05-06 11:45:37,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4557 ImplicationChecksByTransitivity, 5116.1ms TimeCoverageRelationStatistics Valid=6115, Invalid=21607, Unknown=0, NotChecked=0, Total=27722 [2021-05-06 11:45:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-05-06 11:45:38,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2021-05-06 11:45:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 438 states have internal predecessors, (439), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:45:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 550 transitions. [2021-05-06 11:45:38,100 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 550 transitions. Word has length 544 [2021-05-06 11:45:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:45:38,100 INFO L480 AbstractCegarLoop]: Abstraction has 549 states and 550 transitions. [2021-05-06 11:45:38,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.482142857142857) internal successors, (278), 111 states have internal predecessors, (278), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 550 transitions. [2021-05-06 11:45:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-05-06 11:45:38,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:45:38,102 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:45:38,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-06 11:45:38,103 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:45:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:45:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2076926588, now seen corresponding path program 106 times [2021-05-06 11:45:38,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:45:38,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689052497] [2021-05-06 11:45:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:45:38,106 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:45:38,106 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:45:38,106 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:45:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:45:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:45:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:45:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:45:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:45:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:45:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:45:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:45:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:45:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:45:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:45:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:45:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:45:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:45:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:45:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:45:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:45:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:45:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:45:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:45:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:45:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:45:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:45:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:45:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:45:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:45:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:45:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:45:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:45:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:45:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:45:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:45:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:45:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:45:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:45:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:45:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:45:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:45:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:45:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:45:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:45:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:45:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:45:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:45:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:45:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:45:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:45:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:45:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:45:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-05-06 11:45:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2021-05-06 11:45:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2021-05-06 11:45:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2021-05-06 11:45:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2021-05-06 11:45:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:45:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:45:43,496 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:45:43,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689052497] [2021-05-06 11:45:43,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [689052497] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:45:43,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:45:43,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2021-05-06 11:45:43,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104241514] [2021-05-06 11:45:43,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-06 11:45:43,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:45:43,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-06 11:45:43,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=13108, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 11:45:43,497 INFO L87 Difference]: Start difference. First operand 549 states and 550 transitions. Second operand has 116 states, 115 states have (on average 2.4347826086956523) internal successors, (280), 114 states have internal predecessors, (280), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:45:57,844 INFO L93 Difference]: Finished difference Result 562 states and 563 transitions. [2021-05-06 11:45:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-06 11:45:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.4347826086956523) internal successors, (280), 114 states have internal predecessors, (280), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 546 [2021-05-06 11:45:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:45:57,845 INFO L225 Difference]: With dead ends: 562 [2021-05-06 11:45:57,846 INFO L226 Difference]: Without dead ends: 560 [2021-05-06 11:45:57,847 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 8142.0ms TimeCoverageRelationStatistics Valid=465, Invalid=29291, Unknown=0, NotChecked=0, Total=29756 [2021-05-06 11:45:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-05-06 11:45:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 557. [2021-05-06 11:45:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 443 states have (on average 1.0045146726862302) internal successors, (445), 444 states have internal predecessors, (445), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:45:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 558 transitions. [2021-05-06 11:45:57,959 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 558 transitions. Word has length 546 [2021-05-06 11:45:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:45:57,959 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 558 transitions. [2021-05-06 11:45:57,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 115 states have (on average 2.4347826086956523) internal successors, (280), 114 states have internal predecessors, (280), 55 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:45:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 558 transitions. [2021-05-06 11:45:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2021-05-06 11:45:57,961 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:45:57,961 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:45:57,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-06 11:45:57,961 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:45:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:45:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -268615842, now seen corresponding path program 107 times [2021-05-06 11:45:57,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:45:57,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675656832] [2021-05-06 11:45:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:45:57,965 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:45:57,965 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:45:57,965 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:45:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:46:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-05-06 11:46:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:46:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:46:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:46:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:46:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:46:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:46:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:46:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:46:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:46:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:46:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:46:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:46:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:46:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:46:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:46:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:46:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:46:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:46:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:46:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:46:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:46:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:46:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:46:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:46:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:46:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:46:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:46:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:46:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:46:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:46:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:46:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:46:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:46:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:46:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:46:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:46:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:46:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:46:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:46:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:46:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:46:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:46:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:46:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:46:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:46:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:46:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:46:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-05-06 11:46:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2021-05-06 11:46:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2021-05-06 11:46:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2021-05-06 11:46:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2021-05-06 11:46:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2021-05-06 11:46:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:46:01,451 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:46:01,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675656832] [2021-05-06 11:46:01,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [675656832] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:46:01,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:46:01,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2021-05-06 11:46:01,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191565002] [2021-05-06 11:46:01,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 11:46:01,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:46:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 11:46:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3142, Invalid=9740, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 11:46:01,453 INFO L87 Difference]: Start difference. First operand 557 states and 558 transitions. Second operand has 114 states, 114 states have (on average 2.482456140350877) internal successors, (283), 113 states have internal predecessors, (283), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:46:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:46:05,724 INFO L93 Difference]: Finished difference Result 788 states and 844 transitions. [2021-05-06 11:46:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 11:46:05,725 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.482456140350877) internal successors, (283), 113 states have internal predecessors, (283), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 554 [2021-05-06 11:46:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:46:05,726 INFO L225 Difference]: With dead ends: 788 [2021-05-06 11:46:05,726 INFO L226 Difference]: Without dead ends: 560 [2021-05-06 11:46:05,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4724 ImplicationChecksByTransitivity, 5221.2ms TimeCoverageRelationStatistics Valid=6338, Invalid=22392, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 11:46:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-05-06 11:46:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 559. [2021-05-06 11:46:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 445 states have (on average 1.0044943820224719) internal successors, (447), 446 states have internal predecessors, (447), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:46:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 560 transitions. [2021-05-06 11:46:05,849 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 560 transitions. Word has length 554 [2021-05-06 11:46:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:46:05,849 INFO L480 AbstractCegarLoop]: Abstraction has 559 states and 560 transitions. [2021-05-06 11:46:05,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.482456140350877) internal successors, (283), 113 states have internal predecessors, (283), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:46:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 560 transitions. [2021-05-06 11:46:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2021-05-06 11:46:05,851 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:46:05,851 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:46:05,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-06 11:46:05,851 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:46:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:46:05,852 INFO L82 PathProgramCache]: Analyzing trace with hash 208356156, now seen corresponding path program 108 times [2021-05-06 11:46:05,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:46:05,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630956351] [2021-05-06 11:46:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:46:05,856 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:46:05,856 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:46:05,857 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:46:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:46:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:46:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:46:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:46:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:46:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:46:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:46:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:46:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:46:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:46:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:46:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:46:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:46:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:46:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:46:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:46:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:46:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:46:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:46:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:46:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:46:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:46:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:46:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:46:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:46:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:46:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:46:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:46:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:46:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:46:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:46:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:46:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:46:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:46:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:46:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:46:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:46:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:46:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:46:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:46:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:46:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:46:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:46:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:46:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:46:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:46:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:46:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:46:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:46:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:46:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-05-06 11:46:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-05-06 11:46:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2021-05-06 11:46:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-05-06 11:46:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2021-05-06 11:46:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:46:11,605 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:46:11,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630956351] [2021-05-06 11:46:11,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [630956351] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:46:11,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:46:11,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2021-05-06 11:46:11,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476530149] [2021-05-06 11:46:11,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 11:46:11,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:46:11,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 11:46:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=13570, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 11:46:11,606 INFO L87 Difference]: Start difference. First operand 559 states and 560 transitions. Second operand has 118 states, 117 states have (on average 2.4358974358974357) internal successors, (285), 116 states have internal predecessors, (285), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:46:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:46:26,659 INFO L93 Difference]: Finished difference Result 572 states and 573 transitions. [2021-05-06 11:46:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 11:46:26,659 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.4358974358974357) internal successors, (285), 116 states have internal predecessors, (285), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 556 [2021-05-06 11:46:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:46:26,661 INFO L225 Difference]: With dead ends: 572 [2021-05-06 11:46:26,661 INFO L226 Difference]: Without dead ends: 570 [2021-05-06 11:46:26,662 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 8587.8ms TimeCoverageRelationStatistics Valid=473, Invalid=30327, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 11:46:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-05-06 11:46:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 567. [2021-05-06 11:46:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 451 states have (on average 1.0044345898004434) internal successors, (453), 452 states have internal predecessors, (453), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:46:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 568 transitions. [2021-05-06 11:46:26,910 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 568 transitions. Word has length 556 [2021-05-06 11:46:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:46:26,911 INFO L480 AbstractCegarLoop]: Abstraction has 567 states and 568 transitions. [2021-05-06 11:46:26,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 117 states have (on average 2.4358974358974357) internal successors, (285), 116 states have internal predecessors, (285), 56 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:46:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 568 transitions. [2021-05-06 11:46:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-05-06 11:46:26,913 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:46:26,913 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:46:26,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-06 11:46:26,914 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:46:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:46:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1896960746, now seen corresponding path program 109 times [2021-05-06 11:46:26,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:46:26,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783068302] [2021-05-06 11:46:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:46:26,931 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:46:26,931 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:46:26,932 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:46:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:46:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-05-06 11:46:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:46:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:46:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:46:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:46:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:46:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:46:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:46:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:46:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:46:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:46:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:46:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:46:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:46:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:46:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:46:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:46:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:46:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:46:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:46:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:46:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:46:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:46:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:46:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:46:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:46:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:46:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:46:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:46:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:46:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:46:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:46:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:46:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:46:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:46:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:46:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:46:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:46:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:46:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:46:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:46:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:46:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:46:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:46:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:46:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:46:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:46:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:46:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:46:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-05-06 11:46:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-05-06 11:46:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2021-05-06 11:46:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-05-06 11:46:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2021-05-06 11:46:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2021-05-06 11:46:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:46:31,099 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:46:31,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783068302] [2021-05-06 11:46:31,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [783068302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:46:31,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:46:31,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2021-05-06 11:46:31,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213679908] [2021-05-06 11:46:31,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-06 11:46:31,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:46:31,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-06 11:46:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3255, Invalid=10085, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 11:46:31,101 INFO L87 Difference]: Start difference. First operand 567 states and 568 transitions. Second operand has 116 states, 116 states have (on average 2.4827586206896552) internal successors, (288), 115 states have internal predecessors, (288), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:46:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:46:35,536 INFO L93 Difference]: Finished difference Result 802 states and 859 transitions. [2021-05-06 11:46:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-06 11:46:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.4827586206896552) internal successors, (288), 115 states have internal predecessors, (288), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 564 [2021-05-06 11:46:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:46:35,542 INFO L225 Difference]: With dead ends: 802 [2021-05-06 11:46:35,542 INFO L226 Difference]: Without dead ends: 570 [2021-05-06 11:46:35,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4894 ImplicationChecksByTransitivity, 5893.5ms TimeCoverageRelationStatistics Valid=6565, Invalid=23191, Unknown=0, NotChecked=0, Total=29756 [2021-05-06 11:46:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-05-06 11:46:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 569. [2021-05-06 11:46:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 453 states have (on average 1.0044150110375276) internal successors, (455), 454 states have internal predecessors, (455), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:46:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 570 transitions. [2021-05-06 11:46:35,655 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 570 transitions. Word has length 564 [2021-05-06 11:46:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:46:35,655 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 570 transitions. [2021-05-06 11:46:35,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 2.4827586206896552) internal successors, (288), 115 states have internal predecessors, (288), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:46:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 570 transitions. [2021-05-06 11:46:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-05-06 11:46:35,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:46:35,658 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:46:35,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-06 11:46:35,658 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:46:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:46:35,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1179120500, now seen corresponding path program 110 times [2021-05-06 11:46:35,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:46:35,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114347771] [2021-05-06 11:46:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:46:35,661 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:46:35,661 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:46:35,661 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:46:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:46:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:46:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:46:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:46:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:46:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:46:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:46:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:46:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:46:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:46:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:46:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:46:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:46:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:46:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:46:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:46:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:46:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:46:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:46:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:46:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:46:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:46:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:46:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:46:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:46:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:46:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:46:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:46:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:46:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:46:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:46:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:46:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:46:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:46:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:46:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:46:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:46:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:46:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:46:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:46:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:46:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:46:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:46:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:46:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:46:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:46:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:46:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2021-05-06 11:46:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-05-06 11:46:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2021-05-06 11:46:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2021-05-06 11:46:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2021-05-06 11:46:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2021-05-06 11:46:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-05-06 11:46:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2021-05-06 11:46:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2021-05-06 11:46:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:46:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:46:41,272 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:46:41,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114347771] [2021-05-06 11:46:41,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1114347771] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:46:41,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:46:41,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2021-05-06 11:46:41,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40945273] [2021-05-06 11:46:41,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-06 11:46:41,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:46:41,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-06 11:46:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=14040, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 11:46:41,274 INFO L87 Difference]: Start difference. First operand 569 states and 570 transitions. Second operand has 120 states, 119 states have (on average 2.436974789915966) internal successors, (290), 118 states have internal predecessors, (290), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:46:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:46:56,513 INFO L93 Difference]: Finished difference Result 582 states and 583 transitions. [2021-05-06 11:46:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-05-06 11:46:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.436974789915966) internal successors, (290), 118 states have internal predecessors, (290), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 566 [2021-05-06 11:46:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:46:56,515 INFO L225 Difference]: With dead ends: 582 [2021-05-06 11:46:56,515 INFO L226 Difference]: Without dead ends: 580 [2021-05-06 11:46:56,516 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 8507.1ms TimeCoverageRelationStatistics Valid=481, Invalid=31381, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 11:46:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-05-06 11:46:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 577. [2021-05-06 11:46:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 459 states have (on average 1.0043572984749456) internal successors, (461), 460 states have internal predecessors, (461), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:46:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 578 transitions. [2021-05-06 11:46:56,627 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 578 transitions. Word has length 566 [2021-05-06 11:46:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:46:56,641 INFO L480 AbstractCegarLoop]: Abstraction has 577 states and 578 transitions. [2021-05-06 11:46:56,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 119 states have (on average 2.436974789915966) internal successors, (290), 118 states have internal predecessors, (290), 57 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:46:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 578 transitions. [2021-05-06 11:46:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2021-05-06 11:46:56,643 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:46:56,643 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:46:56,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-06 11:46:56,644 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:46:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:46:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1475107506, now seen corresponding path program 111 times [2021-05-06 11:46:56,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:46:56,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715261209] [2021-05-06 11:46:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:46:56,662 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:46:56,663 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:46:56,663 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:46:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:47:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-05-06 11:47:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:47:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:47:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:47:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:47:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:47:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:47:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:47:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:47:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:47:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:47:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:47:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:47:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:47:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:47:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:47:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:47:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:47:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:47:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:47:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:47:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:47:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:47:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:47:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:47:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:47:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:47:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:47:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:47:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:47:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:47:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:47:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:47:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:47:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:47:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:47:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:47:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:47:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:47:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:47:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:47:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:47:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:47:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:47:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:47:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:47:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2021-05-06 11:47:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-05-06 11:47:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2021-05-06 11:47:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2021-05-06 11:47:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2021-05-06 11:47:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2021-05-06 11:47:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-05-06 11:47:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2021-05-06 11:47:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2021-05-06 11:47:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2021-05-06 11:47:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:47:00,378 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:47:00,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715261209] [2021-05-06 11:47:00,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1715261209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:47:00,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:47:00,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2021-05-06 11:47:00,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629165785] [2021-05-06 11:47:00,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 11:47:00,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:47:00,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 11:47:00,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3370, Invalid=10436, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 11:47:00,380 INFO L87 Difference]: Start difference. First operand 577 states and 578 transitions. Second operand has 118 states, 118 states have (on average 2.483050847457627) internal successors, (293), 117 states have internal predecessors, (293), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:47:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:47:05,093 INFO L93 Difference]: Finished difference Result 816 states and 874 transitions. [2021-05-06 11:47:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-05-06 11:47:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.483050847457627) internal successors, (293), 117 states have internal predecessors, (293), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 574 [2021-05-06 11:47:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:47:05,095 INFO L225 Difference]: With dead ends: 816 [2021-05-06 11:47:05,095 INFO L226 Difference]: Without dead ends: 580 [2021-05-06 11:47:05,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 5589.5ms TimeCoverageRelationStatistics Valid=6796, Invalid=24004, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 11:47:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-05-06 11:47:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 579. [2021-05-06 11:47:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 461 states have (on average 1.0043383947939262) internal successors, (463), 462 states have internal predecessors, (463), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:47:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 580 transitions. [2021-05-06 11:47:05,208 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 580 transitions. Word has length 574 [2021-05-06 11:47:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:47:05,209 INFO L480 AbstractCegarLoop]: Abstraction has 579 states and 580 transitions. [2021-05-06 11:47:05,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.483050847457627) internal successors, (293), 117 states have internal predecessors, (293), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:47:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 580 transitions. [2021-05-06 11:47:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-05-06 11:47:05,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:47:05,211 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:47:05,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-06 11:47:05,211 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:47:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:47:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash -116978132, now seen corresponding path program 112 times [2021-05-06 11:47:05,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:47:05,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969893260] [2021-05-06 11:47:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:47:05,214 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:47:05,214 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:47:05,215 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:47:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:47:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:47:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:47:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:47:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:47:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:47:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:47:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:47:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:47:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:47:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:47:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:47:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:47:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:47:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:47:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:47:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:47:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:47:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:47:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:47:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:47:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:47:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:47:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:47:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:47:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:47:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:47:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:47:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:47:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:47:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:47:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:47:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:47:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:47:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:47:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:47:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:47:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:47:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:47:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:47:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:47:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:47:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:47:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:47:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:47:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:47:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:47:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-05-06 11:47:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2021-05-06 11:47:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2021-05-06 11:47:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2021-05-06 11:47:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2021-05-06 11:47:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2021-05-06 11:47:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2021-05-06 11:47:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2021-05-06 11:47:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2021-05-06 11:47:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2021-05-06 11:47:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:47:11,014 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:47:11,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969893260] [2021-05-06 11:47:11,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [969893260] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:47:11,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:47:11,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2021-05-06 11:47:11,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523329728] [2021-05-06 11:47:11,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 122 states [2021-05-06 11:47:11,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:47:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-05-06 11:47:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=14518, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 11:47:11,015 INFO L87 Difference]: Start difference. First operand 579 states and 580 transitions. Second operand has 122 states, 121 states have (on average 2.43801652892562) internal successors, (295), 120 states have internal predecessors, (295), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:47:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:47:26,516 INFO L93 Difference]: Finished difference Result 592 states and 593 transitions. [2021-05-06 11:47:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-06 11:47:26,517 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.43801652892562) internal successors, (295), 120 states have internal predecessors, (295), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 576 [2021-05-06 11:47:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:47:26,518 INFO L225 Difference]: With dead ends: 592 [2021-05-06 11:47:26,518 INFO L226 Difference]: Without dead ends: 590 [2021-05-06 11:47:26,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 8719.4ms TimeCoverageRelationStatistics Valid=489, Invalid=32453, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 11:47:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-05-06 11:47:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 587. [2021-05-06 11:47:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 468 states have internal predecessors, (469), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:47:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 588 transitions. [2021-05-06 11:47:26,645 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 588 transitions. Word has length 576 [2021-05-06 11:47:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:47:26,645 INFO L480 AbstractCegarLoop]: Abstraction has 587 states and 588 transitions. [2021-05-06 11:47:26,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 122 states, 121 states have (on average 2.43801652892562) internal successors, (295), 120 states have internal predecessors, (295), 58 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:47:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 588 transitions. [2021-05-06 11:47:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-05-06 11:47:26,648 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:47:26,648 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:47:26,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-06 11:47:26,648 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:47:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:47:26,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1337423866, now seen corresponding path program 113 times [2021-05-06 11:47:26,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:47:26,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442362163] [2021-05-06 11:47:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:47:26,651 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:47:26,651 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:47:26,652 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:47:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:47:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-05-06 11:47:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-05-06 11:47:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-05-06 11:47:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-05-06 11:47:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-05-06 11:47:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-05-06 11:47:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-05-06 11:47:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-05-06 11:47:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-05-06 11:47:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-05-06 11:47:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-05-06 11:47:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-05-06 11:47:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-05-06 11:47:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-05-06 11:47:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-05-06 11:47:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-05-06 11:47:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-05-06 11:47:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-05-06 11:47:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-05-06 11:47:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-05-06 11:47:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-05-06 11:47:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-05-06 11:47:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-05-06 11:47:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-05-06 11:47:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-05-06 11:47:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-05-06 11:47:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-05-06 11:47:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-05-06 11:47:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-05-06 11:47:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-05-06 11:47:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-05-06 11:47:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-05-06 11:47:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-05-06 11:47:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-05-06 11:47:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-05-06 11:47:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-05-06 11:47:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-05-06 11:47:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-05-06 11:47:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-05-06 11:47:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-05-06 11:47:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-05-06 11:47:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2021-05-06 11:47:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-05-06 11:47:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2021-05-06 11:47:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-05-06 11:47:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2021-05-06 11:47:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-05-06 11:47:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2021-05-06 11:47:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2021-05-06 11:47:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2021-05-06 11:47:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2021-05-06 11:47:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2021-05-06 11:47:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2021-05-06 11:47:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2021-05-06 11:47:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2021-05-06 11:47:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2021-05-06 11:47:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2021-05-06 11:47:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:47:30,335 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:47:30,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442362163] [2021-05-06 11:47:30,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [442362163] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:47:30,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:47:30,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2021-05-06 11:47:30,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955123889] [2021-05-06 11:47:30,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-06 11:47:30,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:47:30,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-06 11:47:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3487, Invalid=10793, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 11:47:30,337 INFO L87 Difference]: Start difference. First operand 587 states and 588 transitions. Second operand has 120 states, 120 states have (on average 2.4833333333333334) internal successors, (298), 119 states have internal predecessors, (298), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:47:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:47:35,060 INFO L93 Difference]: Finished difference Result 830 states and 889 transitions. [2021-05-06 11:47:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-06 11:47:35,061 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.4833333333333334) internal successors, (298), 119 states have internal predecessors, (298), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 584 [2021-05-06 11:47:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:47:35,062 INFO L225 Difference]: With dead ends: 830 [2021-05-06 11:47:35,062 INFO L226 Difference]: Without dead ends: 590 [2021-05-06 11:47:35,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5243 ImplicationChecksByTransitivity, 5630.0ms TimeCoverageRelationStatistics Valid=7031, Invalid=24831, Unknown=0, NotChecked=0, Total=31862 [2021-05-06 11:47:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-05-06 11:47:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2021-05-06 11:47:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 469 states have (on average 1.004264392324094) internal successors, (471), 470 states have internal predecessors, (471), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:47:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 590 transitions. [2021-05-06 11:47:35,182 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 590 transitions. Word has length 584 [2021-05-06 11:47:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:47:35,182 INFO L480 AbstractCegarLoop]: Abstraction has 589 states and 590 transitions. [2021-05-06 11:47:35,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.4833333333333334) internal successors, (298), 119 states have internal predecessors, (298), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:47:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 590 transitions. [2021-05-06 11:47:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-05-06 11:47:35,185 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:47:35,185 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:47:35,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-06 11:47:35,185 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:47:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:47:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1267928220, now seen corresponding path program 114 times [2021-05-06 11:47:35,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:47:35,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973365590] [2021-05-06 11:47:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:47:35,188 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:47:35,188 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:47:35,188 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:47:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:47:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:47:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:47:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:47:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:47:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:47:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:47:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:47:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:47:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:47:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:47:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:47:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:47:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:47:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:47:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:47:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:47:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:47:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:47:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:47:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:47:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:47:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:47:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:47:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:47:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:47:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:47:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:47:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:47:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:47:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:47:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:47:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:47:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:47:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:47:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:47:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:47:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:47:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:47:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:47:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:47:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:47:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:47:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:47:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:47:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:47:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:47:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:47:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-05-06 11:47:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2021-05-06 11:47:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2021-05-06 11:47:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2021-05-06 11:47:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2021-05-06 11:47:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2021-05-06 11:47:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2021-05-06 11:47:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2021-05-06 11:47:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2021-05-06 11:47:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2021-05-06 11:47:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:47:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:47:41,671 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:47:41,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973365590] [2021-05-06 11:47:41,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [973365590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:47:41,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:47:41,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2021-05-06 11:47:41,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691466042] [2021-05-06 11:47:41,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-06 11:47:41,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:47:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-06 11:47:41,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=15004, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 11:47:41,673 INFO L87 Difference]: Start difference. First operand 589 states and 590 transitions. Second operand has 124 states, 123 states have (on average 2.4390243902439024) internal successors, (300), 122 states have internal predecessors, (300), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:47:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:47:57,750 INFO L93 Difference]: Finished difference Result 602 states and 603 transitions. [2021-05-06 11:47:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-05-06 11:47:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.4390243902439024) internal successors, (300), 122 states have internal predecessors, (300), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 586 [2021-05-06 11:47:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:47:57,752 INFO L225 Difference]: With dead ends: 602 [2021-05-06 11:47:57,752 INFO L226 Difference]: Without dead ends: 600 [2021-05-06 11:47:57,753 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 9564.8ms TimeCoverageRelationStatistics Valid=497, Invalid=33543, Unknown=0, NotChecked=0, Total=34040 [2021-05-06 11:47:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-05-06 11:47:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 597. [2021-05-06 11:47:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 475 states have (on average 1.0042105263157894) internal successors, (477), 476 states have internal predecessors, (477), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-06 11:47:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 598 transitions. [2021-05-06 11:47:57,875 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 598 transitions. Word has length 586 [2021-05-06 11:47:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:47:57,875 INFO L480 AbstractCegarLoop]: Abstraction has 597 states and 598 transitions. [2021-05-06 11:47:57,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 123 states have (on average 2.4390243902439024) internal successors, (300), 122 states have internal predecessors, (300), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:47:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 598 transitions. [2021-05-06 11:47:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2021-05-06 11:47:57,878 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:47:57,878 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:47:57,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-06 11:47:57,878 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:47:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:47:57,878 INFO L82 PathProgramCache]: Analyzing trace with hash -588139202, now seen corresponding path program 115 times [2021-05-06 11:47:57,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:47:57,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876089417] [2021-05-06 11:47:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:47:57,882 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:47:57,882 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:47:57,882 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:47:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:48:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-05-06 11:48:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-05-06 11:48:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-05-06 11:48:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-05-06 11:48:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-05-06 11:48:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-05-06 11:48:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-05-06 11:48:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-05-06 11:48:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-05-06 11:48:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-05-06 11:48:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-05-06 11:48:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-05-06 11:48:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-05-06 11:48:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-05-06 11:48:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-05-06 11:48:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-05-06 11:48:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-05-06 11:48:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-05-06 11:48:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-05-06 11:48:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-05-06 11:48:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-05-06 11:48:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-05-06 11:48:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-05-06 11:48:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-05-06 11:48:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-05-06 11:48:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-05-06 11:48:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-05-06 11:48:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-05-06 11:48:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-05-06 11:48:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-05-06 11:48:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-05-06 11:48:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-05-06 11:48:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-05-06 11:48:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-05-06 11:48:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-05-06 11:48:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-05-06 11:48:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-05-06 11:48:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-05-06 11:48:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-05-06 11:48:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-05-06 11:48:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-05-06 11:48:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-05-06 11:48:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-05-06 11:48:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-05-06 11:48:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-05-06 11:48:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-05-06 11:48:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2021-05-06 11:48:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-05-06 11:48:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2021-05-06 11:48:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2021-05-06 11:48:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2021-05-06 11:48:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2021-05-06 11:48:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2021-05-06 11:48:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2021-05-06 11:48:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2021-05-06 11:48:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2021-05-06 11:48:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2021-05-06 11:48:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2021-05-06 11:48:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:48:01,865 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:48:01,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876089417] [2021-05-06 11:48:01,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [876089417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:48:01,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:48:01,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2021-05-06 11:48:01,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829307649] [2021-05-06 11:48:01,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 122 states [2021-05-06 11:48:01,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:48:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-05-06 11:48:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3606, Invalid=11156, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 11:48:01,867 INFO L87 Difference]: Start difference. First operand 597 states and 598 transitions. Second operand has 122 states, 122 states have (on average 2.4836065573770494) internal successors, (303), 121 states have internal predecessors, (303), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:48:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:48:06,826 INFO L93 Difference]: Finished difference Result 844 states and 904 transitions. [2021-05-06 11:48:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-05-06 11:48:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.4836065573770494) internal successors, (303), 121 states have internal predecessors, (303), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 594 [2021-05-06 11:48:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:48:06,828 INFO L225 Difference]: With dead ends: 844 [2021-05-06 11:48:06,828 INFO L226 Difference]: Without dead ends: 600 [2021-05-06 11:48:06,830 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5422 ImplicationChecksByTransitivity, 6003.5ms TimeCoverageRelationStatistics Valid=7270, Invalid=25672, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 11:48:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-05-06 11:48:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 599. [2021-05-06 11:48:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 478 states have internal predecessors, (479), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-06 11:48:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 600 transitions. [2021-05-06 11:48:06,949 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 600 transitions. Word has length 594 [2021-05-06 11:48:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:48:06,950 INFO L480 AbstractCegarLoop]: Abstraction has 599 states and 600 transitions. [2021-05-06 11:48:06,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 122 states, 122 states have (on average 2.4836065573770494) internal successors, (303), 121 states have internal predecessors, (303), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:48:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 600 transitions. [2021-05-06 11:48:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2021-05-06 11:48:06,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:48:06,952 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:48:06,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-06 11:48:06,952 INFO L428 AbstractCegarLoop]: === Iteration 118 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:48:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:48:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1187382044, now seen corresponding path program 116 times [2021-05-06 11:48:06,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:48:06,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787357036] [2021-05-06 11:48:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:48:06,955 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:48:06,956 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:48:06,956 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:48:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:48:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:48:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:48:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:48:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:48:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:48:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:48:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:48:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:48:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:48:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:48:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:48:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:48:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:48:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:48:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:48:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:48:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:48:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:48:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:48:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:48:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:48:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:48:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:48:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:48:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:48:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:48:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:48:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:48:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:48:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:48:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:48:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:48:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:48:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:48:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:48:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:48:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:48:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:48:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:48:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:48:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:48:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:48:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:48:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:48:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:48:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:48:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:48:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:48:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-05-06 11:48:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-05-06 11:48:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2021-05-06 11:48:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-05-06 11:48:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2021-05-06 11:48:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2021-05-06 11:48:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2021-05-06 11:48:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2021-05-06 11:48:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2021-05-06 11:48:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2021-05-06 11:48:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:48:13,036 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:48:13,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787357036] [2021-05-06 11:48:13,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1787357036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:48:13,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:48:13,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2021-05-06 11:48:13,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135539153] [2021-05-06 11:48:13,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 126 states [2021-05-06 11:48:13,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:48:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-05-06 11:48:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=15498, Unknown=0, NotChecked=0, Total=15750 [2021-05-06 11:48:13,037 INFO L87 Difference]: Start difference. First operand 599 states and 600 transitions. Second operand has 126 states, 125 states have (on average 2.44) internal successors, (305), 124 states have internal predecessors, (305), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:48:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:48:29,818 INFO L93 Difference]: Finished difference Result 612 states and 613 transitions. [2021-05-06 11:48:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-06 11:48:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.44) internal successors, (305), 124 states have internal predecessors, (305), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 596 [2021-05-06 11:48:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:48:29,819 INFO L225 Difference]: With dead ends: 612 [2021-05-06 11:48:29,820 INFO L226 Difference]: Without dead ends: 610 [2021-05-06 11:48:29,821 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 9297.8ms TimeCoverageRelationStatistics Valid=505, Invalid=34651, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 11:48:29,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-05-06 11:48:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 607. [2021-05-06 11:48:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 483 states have (on average 1.0041407867494825) internal successors, (485), 484 states have internal predecessors, (485), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-05-06 11:48:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 608 transitions. [2021-05-06 11:48:29,943 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 608 transitions. Word has length 596 [2021-05-06 11:48:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:48:29,944 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 608 transitions. [2021-05-06 11:48:29,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 126 states, 125 states have (on average 2.44) internal successors, (305), 124 states have internal predecessors, (305), 60 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:48:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 608 transitions. [2021-05-06 11:48:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-05-06 11:48:29,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:48:29,947 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:48:29,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-06 11:48:29,947 INFO L428 AbstractCegarLoop]: === Iteration 119 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:48:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:48:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1711567626, now seen corresponding path program 117 times [2021-05-06 11:48:29,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:48:29,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250189276] [2021-05-06 11:48:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:48:29,950 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:48:29,950 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:48:29,951 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:48:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:48:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-05-06 11:48:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-05-06 11:48:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-05-06 11:48:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-05-06 11:48:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-05-06 11:48:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-05-06 11:48:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-05-06 11:48:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-05-06 11:48:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-05-06 11:48:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-05-06 11:48:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-05-06 11:48:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-05-06 11:48:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-05-06 11:48:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-05-06 11:48:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-05-06 11:48:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-05-06 11:48:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-05-06 11:48:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-05-06 11:48:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-05-06 11:48:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-05-06 11:48:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-05-06 11:48:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-05-06 11:48:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-05-06 11:48:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-05-06 11:48:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-05-06 11:48:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-05-06 11:48:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-05-06 11:48:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-05-06 11:48:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-05-06 11:48:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-05-06 11:48:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-05-06 11:48:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-05-06 11:48:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-05-06 11:48:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-05-06 11:48:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-05-06 11:48:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-05-06 11:48:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-05-06 11:48:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-05-06 11:48:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-05-06 11:48:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-05-06 11:48:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-05-06 11:48:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-05-06 11:48:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-05-06 11:48:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2021-05-06 11:48:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2021-05-06 11:48:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2021-05-06 11:48:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-05-06 11:48:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2021-05-06 11:48:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-05-06 11:48:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-05-06 11:48:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2021-05-06 11:48:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-05-06 11:48:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2021-05-06 11:48:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2021-05-06 11:48:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2021-05-06 11:48:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2021-05-06 11:48:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2021-05-06 11:48:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2021-05-06 11:48:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2021-05-06 11:48:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:48:33,969 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:48:33,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250189276] [2021-05-06 11:48:33,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250189276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:48:33,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:48:33,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2021-05-06 11:48:33,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376922029] [2021-05-06 11:48:33,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-06 11:48:33,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:48:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-06 11:48:33,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3727, Invalid=11525, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 11:48:33,971 INFO L87 Difference]: Start difference. First operand 607 states and 608 transitions. Second operand has 124 states, 124 states have (on average 2.4838709677419355) internal successors, (308), 123 states have internal predecessors, (308), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-06 11:48:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:48:37,694 INFO L93 Difference]: Finished difference Result 858 states and 919 transitions. [2021-05-06 11:48:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-05-06 11:48:37,695 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.4838709677419355) internal successors, (308), 123 states have internal predecessors, (308), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 604 [2021-05-06 11:48:37,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:48:37,696 INFO L225 Difference]: With dead ends: 858 [2021-05-06 11:48:37,697 INFO L226 Difference]: Without dead ends: 610 [2021-05-06 11:48:37,698 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5604 ImplicationChecksByTransitivity, 6139.4ms TimeCoverageRelationStatistics Valid=7513, Invalid=26527, Unknown=0, NotChecked=0, Total=34040 [2021-05-06 11:48:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-05-06 11:48:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 609. [2021-05-06 11:48:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 485 states have (on average 1.0041237113402062) internal successors, (487), 486 states have internal predecessors, (487), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-05-06 11:48:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 610 transitions. [2021-05-06 11:48:37,833 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 610 transitions. Word has length 604 [2021-05-06 11:48:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:48:37,833 INFO L480 AbstractCegarLoop]: Abstraction has 609 states and 610 transitions. [2021-05-06 11:48:37,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 2.4838709677419355) internal successors, (308), 123 states have internal predecessors, (308), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-06 11:48:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 610 transitions. [2021-05-06 11:48:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2021-05-06 11:48:37,836 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:48:37,836 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:48:37,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-06 11:48:37,836 INFO L428 AbstractCegarLoop]: === Iteration 120 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:48:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:48:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1293509292, now seen corresponding path program 118 times [2021-05-06 11:48:37,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:48:37,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34585971] [2021-05-06 11:48:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:48:37,839 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:48:37,839 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:48:37,840 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:48:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:48:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-05-06 11:48:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-05-06 11:48:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-05-06 11:48:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-05-06 11:48:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-05-06 11:48:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-05-06 11:48:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-05-06 11:48:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-05-06 11:48:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-05-06 11:48:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-05-06 11:48:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-05-06 11:48:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-05-06 11:48:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-05-06 11:48:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-05-06 11:48:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-05-06 11:48:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-05-06 11:48:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-05-06 11:48:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-05-06 11:48:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-05-06 11:48:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-05-06 11:48:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-05-06 11:48:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-05-06 11:48:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-05-06 11:48:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-05-06 11:48:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-05-06 11:48:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-05-06 11:48:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-05-06 11:48:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-05-06 11:48:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-05-06 11:48:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-05-06 11:48:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-05-06 11:48:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-05-06 11:48:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-05-06 11:48:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-05-06 11:48:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-05-06 11:48:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-05-06 11:48:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-05-06 11:48:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-05-06 11:48:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-05-06 11:48:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-05-06 11:48:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-05-06 11:48:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-05-06 11:48:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2021-05-06 11:48:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2021-05-06 11:48:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-05-06 11:48:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2021-05-06 11:48:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-05-06 11:48:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2021-05-06 11:48:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2021-05-06 11:48:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2021-05-06 11:48:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2021-05-06 11:48:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-05-06 11:48:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2021-05-06 11:48:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2021-05-06 11:48:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2021-05-06 11:48:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2021-05-06 11:48:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2021-05-06 11:48:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2021-05-06 11:48:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2021-05-06 11:48:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:48:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:48:44,104 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:48:44,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34585971] [2021-05-06 11:48:44,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [34585971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:48:44,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:48:44,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2021-05-06 11:48:44,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117381376] [2021-05-06 11:48:44,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states [2021-05-06 11:48:44,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:48:44,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-05-06 11:48:44,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=16000, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 11:48:44,105 INFO L87 Difference]: Start difference. First operand 609 states and 610 transitions. Second operand has 128 states, 127 states have (on average 2.440944881889764) internal successors, (310), 126 states have internal predecessors, (310), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)