/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-crafted/simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:30:05,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:30:05,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:30:05,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:30:05,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:30:05,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:30:05,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:30:05,238 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 11:30:05,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:30:05,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:30:05,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:30:05,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:30:05,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:30:05,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:30:05,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:30:05,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:30:05,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:30:05,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:30:05,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:30:05,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:30:05,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:30:05,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:30:05,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:30:05,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:30:05,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:30:05,259 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:30:05,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:30:05,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:30:05,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:30:05,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:30:05,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:30:05,635 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:30:05,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2021-05-06 11:30:05,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240b20f5b/1e3da63407eb42d08be3fb16df7975eb/FLAGd75444065 [2021-05-06 11:30:06,156 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:30:06,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2021-05-06 11:30:06,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240b20f5b/1e3da63407eb42d08be3fb16df7975eb/FLAGd75444065 [2021-05-06 11:30:06,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240b20f5b/1e3da63407eb42d08be3fb16df7975eb [2021-05-06 11:30:06,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:30:06,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:30:06,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:30:06,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:30:06,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:30:06,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a92b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06, skipping insertion in model container [2021-05-06 11:30:06,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:30:06,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:30:06,364 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-crafted/simple_array_index_value_2.i[919,932] [2021-05-06 11:30:06,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:30:06,391 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:30:06,451 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-crafted/simple_array_index_value_2.i[919,932] [2021-05-06 11:30:06,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:30:06,486 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:30:06,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06 WrapperNode [2021-05-06 11:30:06,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:30:06,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:30:06,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:30:06,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:30:06,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (1/1) ... [2021-05-06 11:30:06,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:30:06,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:30:06,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:30:06,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:30:06,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (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 11:30:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:30:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:30:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:30:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:30:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:30:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:30:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:30:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:30:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:30:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:30:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:30:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:30:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:30:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:30:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-06 11:30:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:30:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:30:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:30:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:30:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:30:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:30:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:30:06,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:30:06,854 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 11:30:06,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:30:06 BoogieIcfgContainer [2021-05-06 11:30:06,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:30:06,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:30:06,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:30:06,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:30:06,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:30:06" (1/3) ... [2021-05-06 11:30:06,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397199cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:30:06, skipping insertion in model container [2021-05-06 11:30:06,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:30:06" (2/3) ... [2021-05-06 11:30:06,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397199cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:30:06, skipping insertion in model container [2021-05-06 11:30:06,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:30:06" (3/3) ... [2021-05-06 11:30:06,862 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2021-05-06 11:30:06,866 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:30:06,869 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:30:06,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:30:06,900 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:30:06,900 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:30:06,900 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:30:06,900 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:30:06,900 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:30:06,917 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:30:06,917 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:30:06,917 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:30:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:30:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 11:30:06,944 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:06,944 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:06,945 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1210672905, now seen corresponding path program 1 times [2021-05-06 11:30:06,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:06,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992283596] [2021-05-06 11:30:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:07,066 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,318 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 11:30:07,320 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:07,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992283596] [2021-05-06 11:30:07,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1992283596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:07,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:07,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:30:07,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587840528] [2021-05-06 11:30:07,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:30:07,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:30:07,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:30:07,341 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 11:30:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:07,488 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-05-06 11:30:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:30:07,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2021-05-06 11:30:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:07,497 INFO L225 Difference]: With dead ends: 62 [2021-05-06 11:30:07,497 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 11:30:07,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:30:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 11:30:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-05-06 11:30:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:30:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-05-06 11:30:07,551 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2021-05-06 11:30:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:07,552 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-05-06 11:30:07,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 11:30:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-05-06 11:30:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 11:30:07,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:07,553 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:07,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:30:07,554 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:07,555 INFO L82 PathProgramCache]: Analyzing trace with hash 778735204, now seen corresponding path program 1 times [2021-05-06 11:30:07,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:07,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594824378] [2021-05-06 11:30:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:07,587 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:07,587 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:07,593 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,773 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 11:30:07,773 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:07,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594824378] [2021-05-06 11:30:07,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594824378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:07,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:07,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 11:30:07,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118199285] [2021-05-06 11:30:07,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 11:30:07,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:07,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 11:30:07,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:30:07,776 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 11:30:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:07,870 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-05-06 11:30:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 11:30:07,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 21 [2021-05-06 11:30:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:07,872 INFO L225 Difference]: With dead ends: 52 [2021-05-06 11:30:07,872 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 11:30:07,873 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:30:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 11:30:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-05-06 11:30:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:30:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-05-06 11:30:07,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2021-05-06 11:30:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:07,881 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-05-06 11:30:07,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 11:30:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-05-06 11:30:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 11:30:07,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:07,883 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:07,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:30:07,883 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1692936895, now seen corresponding path program 2 times [2021-05-06 11:30:07,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:07,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111126814] [2021-05-06 11:30:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:07,891 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:07,891 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:07,892 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 11:30:08,000 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:08,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111126814] [2021-05-06 11:30:08,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111126814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:08,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:08,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:30:08,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511148336] [2021-05-06 11:30:08,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:30:08,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:08,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:30:08,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:30:08,002 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 11:30:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:08,157 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-05-06 11:30:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 11:30:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 29 [2021-05-06 11:30:08,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:08,162 INFO L225 Difference]: With dead ends: 60 [2021-05-06 11:30:08,162 INFO L226 Difference]: Without dead ends: 49 [2021-05-06 11:30:08,163 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:30:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-06 11:30:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2021-05-06 11:30:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:30:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-06 11:30:08,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2021-05-06 11:30:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:08,184 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-06 11:30:08,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 11:30:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-06 11:30:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 11:30:08,185 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:08,186 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:08,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:30:08,186 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash 912079898, now seen corresponding path program 3 times [2021-05-06 11:30:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:08,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574065071] [2021-05-06 11:30:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:08,198 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:08,198 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:08,200 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 11:30:08,343 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:08,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574065071] [2021-05-06 11:30:08,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1574065071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:08,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:08,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:30:08,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923001255] [2021-05-06 11:30:08,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:30:08,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:08,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:30:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:30:08,345 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 11:30:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:08,519 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-05-06 11:30:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:30:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 37 [2021-05-06 11:30:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:08,521 INFO L225 Difference]: With dead ends: 68 [2021-05-06 11:30:08,521 INFO L226 Difference]: Without dead ends: 57 [2021-05-06 11:30:08,521 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:30:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-06 11:30:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2021-05-06 11:30:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 11:30:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-05-06 11:30:08,528 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2021-05-06 11:30:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:08,528 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-05-06 11:30:08,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 11:30:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-05-06 11:30:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 11:30:08,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:08,530 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:08,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:30:08,530 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash 42254965, now seen corresponding path program 4 times [2021-05-06 11:30:08,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:08,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865097657] [2021-05-06 11:30:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:08,537 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:08,537 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:08,538 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 11:30:08,728 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:08,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865097657] [2021-05-06 11:30:08,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [865097657] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:08,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:08,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 11:30:08,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821731478] [2021-05-06 11:30:08,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 11:30:08,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:08,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 11:30:08,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:30:08,730 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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 11:30:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:08,968 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-05-06 11:30:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:30:08,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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 45 [2021-05-06 11:30:08,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:08,977 INFO L225 Difference]: With dead ends: 76 [2021-05-06 11:30:08,978 INFO L226 Difference]: Without dead ends: 65 [2021-05-06 11:30:08,979 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:30:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-06 11:30:08,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2021-05-06 11:30:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 11:30:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-05-06 11:30:08,992 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 45 [2021-05-06 11:30:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:08,992 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-05-06 11:30:08,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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 11:30:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-05-06 11:30:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 11:30:08,993 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:08,993 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:08,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 11:30:08,994 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:08,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1041874384, now seen corresponding path program 5 times [2021-05-06 11:30:08,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:08,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857212224] [2021-05-06 11:30:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:09,011 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:09,011 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:09,013 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-06 11:30:09,214 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:09,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857212224] [2021-05-06 11:30:09,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1857212224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:09,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:09,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:30:09,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330140965] [2021-05-06 11:30:09,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:30:09,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:30:09,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:30:09,218 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 11:30:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:09,523 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-05-06 11:30:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 11:30:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 53 [2021-05-06 11:30:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:09,527 INFO L225 Difference]: With dead ends: 84 [2021-05-06 11:30:09,527 INFO L226 Difference]: Without dead ends: 73 [2021-05-06 11:30:09,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 72.8ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:30:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-06 11:30:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2021-05-06 11:30:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 11:30:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-05-06 11:30:09,544 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 53 [2021-05-06 11:30:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:09,545 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-05-06 11:30:09,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 11:30:09,545 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-05-06 11:30:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 11:30:09,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:09,551 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:09,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-06 11:30:09,552 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1926704683, now seen corresponding path program 6 times [2021-05-06 11:30:09,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:09,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251728773] [2021-05-06 11:30:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:09,567 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:09,567 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:09,568 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-06 11:30:09,710 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:09,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251728773] [2021-05-06 11:30:09,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [251728773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:09,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:09,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-06 11:30:09,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101241380] [2021-05-06 11:30:09,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 11:30:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:09,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 11:30:09,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:30:09,712 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 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 11:30:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:10,036 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2021-05-06 11:30:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 11:30:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 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 61 [2021-05-06 11:30:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:10,038 INFO L225 Difference]: With dead ends: 92 [2021-05-06 11:30:10,038 INFO L226 Difference]: Without dead ends: 81 [2021-05-06 11:30:10,038 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:30:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-06 11:30:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 50. [2021-05-06 11:30:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 11:30:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-05-06 11:30:10,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 61 [2021-05-06 11:30:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:10,046 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-05-06 11:30:10,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 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 11:30:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-05-06 11:30:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 11:30:10,047 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:10,047 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:10,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-06 11:30:10,047 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:10,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1064833926, now seen corresponding path program 7 times [2021-05-06 11:30:10,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:10,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630666151] [2021-05-06 11:30:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:10,053 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:10,054 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:10,055 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-06 11:30:10,261 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:10,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630666151] [2021-05-06 11:30:10,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1630666151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:10,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:10,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-06 11:30:10,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875595636] [2021-05-06 11:30:10,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 11:30:10,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 11:30:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:30:10,264 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 11:30:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:10,641 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-05-06 11:30:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 11:30:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 69 [2021-05-06 11:30:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:10,643 INFO L225 Difference]: With dead ends: 100 [2021-05-06 11:30:10,643 INFO L226 Difference]: Without dead ends: 89 [2021-05-06 11:30:10,643 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:30:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-06 11:30:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2021-05-06 11:30:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 11:30:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-05-06 11:30:10,651 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 69 [2021-05-06 11:30:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:10,651 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-05-06 11:30:10,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 11:30:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-05-06 11:30:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 11:30:10,652 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:10,652 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:10,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-06 11:30:10,652 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:10,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1471639009, now seen corresponding path program 8 times [2021-05-06 11:30:10,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:10,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698628495] [2021-05-06 11:30:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:10,660 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:10,660 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:10,661 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-06 11:30:10,863 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:10,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698628495] [2021-05-06 11:30:10,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698628495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:10,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:10,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-06 11:30:10,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688184012] [2021-05-06 11:30:10,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 11:30:10,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:10,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 11:30:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:30:10,867 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 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 11:30:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:11,285 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2021-05-06 11:30:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 11:30:11,286 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 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 77 [2021-05-06 11:30:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:11,287 INFO L225 Difference]: With dead ends: 108 [2021-05-06 11:30:11,287 INFO L226 Difference]: Without dead ends: 97 [2021-05-06 11:30:11,287 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:30:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-06 11:30:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2021-05-06 11:30:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 11:30:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-05-06 11:30:11,295 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 77 [2021-05-06 11:30:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:11,295 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-05-06 11:30:11,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 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 11:30:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-05-06 11:30:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 11:30:11,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:11,296 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:11,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-06 11:30:11,296 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2075116228, now seen corresponding path program 9 times [2021-05-06 11:30:11,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:11,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480076634] [2021-05-06 11:30:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:11,302 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:11,303 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:11,303 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-06 11:30:11,512 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:11,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480076634] [2021-05-06 11:30:11,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [480076634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:11,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:11,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-06 11:30:11,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149995261] [2021-05-06 11:30:11,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 11:30:11,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:11,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 11:30:11,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:30:11,514 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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 11:30:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:12,058 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2021-05-06 11:30:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 11:30:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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 85 [2021-05-06 11:30:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:12,060 INFO L225 Difference]: With dead ends: 116 [2021-05-06 11:30:12,060 INFO L226 Difference]: Without dead ends: 105 [2021-05-06 11:30:12,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:30:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-06 11:30:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2021-05-06 11:30:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 11:30:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-05-06 11:30:12,074 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 85 [2021-05-06 11:30:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:12,074 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-05-06 11:30:12,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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 11:30:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-05-06 11:30:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 11:30:12,075 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:12,075 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:12,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-06 11:30:12,075 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1560444521, now seen corresponding path program 10 times [2021-05-06 11:30:12,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:12,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739849221] [2021-05-06 11:30:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:12,081 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:12,081 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:12,082 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-06 11:30:12,300 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:12,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739849221] [2021-05-06 11:30:12,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [739849221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:12,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:12,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-06 11:30:12,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286983538] [2021-05-06 11:30:12,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 11:30:12,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:12,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 11:30:12,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:30:12,302 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 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 11:30:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:12,903 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2021-05-06 11:30:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 11:30:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 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 93 [2021-05-06 11:30:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:12,905 INFO L225 Difference]: With dead ends: 124 [2021-05-06 11:30:12,905 INFO L226 Difference]: Without dead ends: 113 [2021-05-06 11:30:12,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:30:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-06 11:30:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 66. [2021-05-06 11:30:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:30:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2021-05-06 11:30:12,919 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 93 [2021-05-06 11:30:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:12,920 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2021-05-06 11:30:12,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 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 11:30:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2021-05-06 11:30:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 11:30:12,921 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:12,921 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:12,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-06 11:30:12,922 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1501938958, now seen corresponding path program 11 times [2021-05-06 11:30:12,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:12,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752350806] [2021-05-06 11:30:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:12,929 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:12,929 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:12,931 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-05-06 11:30:13,195 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:13,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752350806] [2021-05-06 11:30:13,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [752350806] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:13,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:13,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-06 11:30:13,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762191318] [2021-05-06 11:30:13,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 11:30:13,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 11:30:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-06 11:30:13,197 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 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 11:30:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:13,913 INFO L93 Difference]: Finished difference Result 132 states and 158 transitions. [2021-05-06 11:30:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 11:30:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 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 101 [2021-05-06 11:30:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:13,915 INFO L225 Difference]: With dead ends: 132 [2021-05-06 11:30:13,915 INFO L226 Difference]: Without dead ends: 121 [2021-05-06 11:30:13,915 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-06 11:30:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-06 11:30:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 70. [2021-05-06 11:30:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 11:30:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-05-06 11:30:13,922 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 101 [2021-05-06 11:30:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:13,923 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-05-06 11:30:13,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 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 11:30:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-05-06 11:30:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 11:30:13,924 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:13,924 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:13,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-06 11:30:13,924 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:13,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:13,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1769903795, now seen corresponding path program 12 times [2021-05-06 11:30:13,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:13,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515910893] [2021-05-06 11:30:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:13,930 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:13,931 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:13,932 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-05-06 11:30:14,187 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:14,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515910893] [2021-05-06 11:30:14,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [515910893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:14,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:14,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-06 11:30:14,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877146274] [2021-05-06 11:30:14,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 11:30:14,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:14,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 11:30:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:30:14,189 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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 11:30:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:14,976 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2021-05-06 11:30:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 11:30:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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 109 [2021-05-06 11:30:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:14,977 INFO L225 Difference]: With dead ends: 140 [2021-05-06 11:30:14,977 INFO L226 Difference]: Without dead ends: 129 [2021-05-06 11:30:14,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:30:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-06 11:30:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 74. [2021-05-06 11:30:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 16 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 11:30:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-05-06 11:30:14,985 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 109 [2021-05-06 11:30:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:14,985 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-05-06 11:30:14,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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 11:30:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-05-06 11:30:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 11:30:14,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:14,986 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:14,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-06 11:30:14,987 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:14,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:14,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1882321752, now seen corresponding path program 13 times [2021-05-06 11:30:14,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:14,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602177613] [2021-05-06 11:30:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:15,001 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:15,001 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:15,002 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-05-06 11:30:15,289 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:15,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602177613] [2021-05-06 11:30:15,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1602177613] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:15,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:15,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-06 11:30:15,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370423740] [2021-05-06 11:30:15,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-06 11:30:15,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-06 11:30:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-05-06 11:30:15,290 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 11:30:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:16,081 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2021-05-06 11:30:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 11:30:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 117 [2021-05-06 11:30:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:16,090 INFO L225 Difference]: With dead ends: 148 [2021-05-06 11:30:16,090 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 11:30:16,090 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 174.8ms TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-05-06 11:30:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 11:30:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2021-05-06 11:30:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:30:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-05-06 11:30:16,101 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 117 [2021-05-06 11:30:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:16,101 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-05-06 11:30:16,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 11:30:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-05-06 11:30:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 11:30:16,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:16,102 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:16,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-06 11:30:16,103 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1004854013, now seen corresponding path program 14 times [2021-05-06 11:30:16,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:16,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560394178] [2021-05-06 11:30:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:16,112 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:16,112 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:16,113 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-05-06 11:30:16,434 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:16,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560394178] [2021-05-06 11:30:16,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560394178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:16,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:16,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-06 11:30:16,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325691253] [2021-05-06 11:30:16,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 11:30:16,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 11:30:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-05-06 11:30:16,435 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 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 11:30:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:17,345 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2021-05-06 11:30:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 11:30:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 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 125 [2021-05-06 11:30:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:17,349 INFO L225 Difference]: With dead ends: 156 [2021-05-06 11:30:17,349 INFO L226 Difference]: Without dead ends: 145 [2021-05-06 11:30:17,350 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 205.7ms TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-05-06 11:30:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-06 11:30:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2021-05-06 11:30:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 11:30:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2021-05-06 11:30:17,357 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 125 [2021-05-06 11:30:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:17,357 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2021-05-06 11:30:17,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 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 11:30:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2021-05-06 11:30:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 11:30:17,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:17,359 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:17,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-06 11:30:17,359 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2049159774, now seen corresponding path program 15 times [2021-05-06 11:30:17,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:17,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560547417] [2021-05-06 11:30:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:17,370 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:17,370 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:17,371 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-06 11:30:17,680 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:17,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560547417] [2021-05-06 11:30:17,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [560547417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:17,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:17,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-06 11:30:17,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085134661] [2021-05-06 11:30:17,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 11:30:17,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:17,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 11:30:17,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-06 11:30:17,682 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 11:30:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:18,738 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2021-05-06 11:30:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 11:30:18,739 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 133 [2021-05-06 11:30:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:18,742 INFO L225 Difference]: With dead ends: 164 [2021-05-06 11:30:18,742 INFO L226 Difference]: Without dead ends: 153 [2021-05-06 11:30:18,743 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 213.7ms TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-06 11:30:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-06 11:30:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2021-05-06 11:30:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 11:30:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2021-05-06 11:30:18,751 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 133 [2021-05-06 11:30:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:18,752 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2021-05-06 11:30:18,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 11:30:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2021-05-06 11:30:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 11:30:18,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:18,753 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:18,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-06 11:30:18,754 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash 228766905, now seen corresponding path program 16 times [2021-05-06 11:30:18,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:18,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880024187] [2021-05-06 11:30:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:18,761 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:18,761 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:18,763 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-05-06 11:30:19,106 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:19,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880024187] [2021-05-06 11:30:19,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [880024187] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:19,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:19,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-06 11:30:19,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131666699] [2021-05-06 11:30:19,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 11:30:19,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:19,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 11:30:19,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:30:19,108 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 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 11:30:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:20,291 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2021-05-06 11:30:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 11:30:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 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 141 [2021-05-06 11:30:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:20,293 INFO L225 Difference]: With dead ends: 172 [2021-05-06 11:30:20,293 INFO L226 Difference]: Without dead ends: 161 [2021-05-06 11:30:20,293 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-05-06 11:30:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-06 11:30:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 90. [2021-05-06 11:30:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 11:30:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2021-05-06 11:30:20,300 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 141 [2021-05-06 11:30:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:20,300 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2021-05-06 11:30:20,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 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 11:30:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2021-05-06 11:30:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 11:30:20,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:20,301 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:20,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-06 11:30:20,302 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -279761900, now seen corresponding path program 17 times [2021-05-06 11:30:20,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:20,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943010761] [2021-05-06 11:30:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:20,308 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:20,309 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:20,309 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-05-06 11:30:20,711 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:20,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943010761] [2021-05-06 11:30:20,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [943010761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:20,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:20,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-06 11:30:20,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559786956] [2021-05-06 11:30:20,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 11:30:20,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 11:30:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-06 11:30:20,713 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 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 11:30:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:21,903 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2021-05-06 11:30:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 11:30:21,904 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 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 149 [2021-05-06 11:30:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:21,905 INFO L225 Difference]: With dead ends: 180 [2021-05-06 11:30:21,905 INFO L226 Difference]: Without dead ends: 169 [2021-05-06 11:30:21,906 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 290.3ms TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-06 11:30:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-06 11:30:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 94. [2021-05-06 11:30:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 11:30:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-05-06 11:30:21,912 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 149 [2021-05-06 11:30:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:21,912 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-05-06 11:30:21,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 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 11:30:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-05-06 11:30:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 11:30:21,914 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:21,914 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:21,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-06 11:30:21,914 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:21,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1527768977, now seen corresponding path program 18 times [2021-05-06 11:30:21,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:21,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683660938] [2021-05-06 11:30:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:21,920 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:21,920 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:21,921 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-05-06 11:30:22,315 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:22,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683660938] [2021-05-06 11:30:22,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [683660938] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:22,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:22,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-06 11:30:22,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581707154] [2021-05-06 11:30:22,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 11:30:22,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 11:30:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:30:22,317 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 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 11:30:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:23,684 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2021-05-06 11:30:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 11:30:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 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 157 [2021-05-06 11:30:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:23,685 INFO L225 Difference]: With dead ends: 188 [2021-05-06 11:30:23,685 INFO L226 Difference]: Without dead ends: 177 [2021-05-06 11:30:23,686 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 276.6ms TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:30:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-06 11:30:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2021-05-06 11:30:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 11:30:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2021-05-06 11:30:23,693 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 157 [2021-05-06 11:30:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:23,693 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2021-05-06 11:30:23,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 21 states have internal predecessors, (66), 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 11:30:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2021-05-06 11:30:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 11:30:23,694 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:23,695 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:23,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-06 11:30:23,695 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash -919307830, now seen corresponding path program 19 times [2021-05-06 11:30:23,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:23,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028892007] [2021-05-06 11:30:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:23,701 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:23,701 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:23,702 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-05-06 11:30:24,133 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:24,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028892007] [2021-05-06 11:30:24,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1028892007] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:24,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:24,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-06 11:30:24,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138455790] [2021-05-06 11:30:24,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 11:30:24,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 11:30:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-05-06 11:30:24,135 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 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 11:30:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:25,713 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2021-05-06 11:30:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 11:30:25,713 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 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 165 [2021-05-06 11:30:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:25,715 INFO L225 Difference]: With dead ends: 196 [2021-05-06 11:30:25,715 INFO L226 Difference]: Without dead ends: 185 [2021-05-06 11:30:25,715 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 328.6ms TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-05-06 11:30:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-06 11:30:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 102. [2021-05-06 11:30:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 11:30:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2021-05-06 11:30:25,722 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 165 [2021-05-06 11:30:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:25,723 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2021-05-06 11:30:25,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 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 11:30:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2021-05-06 11:30:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 11:30:25,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:25,724 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:25,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-06 11:30:25,724 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash 198922277, now seen corresponding path program 20 times [2021-05-06 11:30:25,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:25,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249783122] [2021-05-06 11:30:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:25,732 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:25,732 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:25,733 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-05-06 11:30:26,140 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:26,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249783122] [2021-05-06 11:30:26,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249783122] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:26,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:26,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-06 11:30:26,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954964894] [2021-05-06 11:30:26,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 11:30:26,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 11:30:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-05-06 11:30:26,141 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 11:30:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:27,610 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2021-05-06 11:30:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 11:30:27,610 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 173 [2021-05-06 11:30:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:27,611 INFO L225 Difference]: With dead ends: 204 [2021-05-06 11:30:27,612 INFO L226 Difference]: Without dead ends: 193 [2021-05-06 11:30:27,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 281.2ms TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-05-06 11:30:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-06 11:30:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 106. [2021-05-06 11:30:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 11:30:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-05-06 11:30:27,619 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 173 [2021-05-06 11:30:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:27,619 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-05-06 11:30:27,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 11:30:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-05-06 11:30:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 11:30:27,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:27,621 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:27,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-06 11:30:27,621 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash 832543616, now seen corresponding path program 21 times [2021-05-06 11:30:27,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:27,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227404073] [2021-05-06 11:30:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:27,636 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:27,636 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:27,637 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2021-05-06 11:30:28,085 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:28,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227404073] [2021-05-06 11:30:28,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [227404073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:28,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:28,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-06 11:30:28,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688118649] [2021-05-06 11:30:28,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 11:30:28,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:28,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 11:30:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-05-06 11:30:28,086 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 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 11:30:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:29,761 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2021-05-06 11:30:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-06 11:30:29,762 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 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 181 [2021-05-06 11:30:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:29,763 INFO L225 Difference]: With dead ends: 212 [2021-05-06 11:30:29,763 INFO L226 Difference]: Without dead ends: 201 [2021-05-06 11:30:29,764 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 325.0ms TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-05-06 11:30:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-06 11:30:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 110. [2021-05-06 11:30:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 81 states have internal predecessors, (83), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 11:30:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2021-05-06 11:30:29,771 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 181 [2021-05-06 11:30:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:29,772 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2021-05-06 11:30:29,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 24 states have internal predecessors, (75), 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 11:30:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2021-05-06 11:30:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 11:30:29,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:29,774 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:29,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-06 11:30:29,774 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 339499995, now seen corresponding path program 22 times [2021-05-06 11:30:29,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:29,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661813071] [2021-05-06 11:30:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:29,780 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:29,780 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:29,781 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-05-06 11:30:30,244 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:30,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661813071] [2021-05-06 11:30:30,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [661813071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:30,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:30,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-06 11:30:30,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592903706] [2021-05-06 11:30:30,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 11:30:30,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 11:30:30,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:30:30,245 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 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 11:30:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:31,935 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2021-05-06 11:30:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 11:30:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 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 189 [2021-05-06 11:30:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:31,936 INFO L225 Difference]: With dead ends: 220 [2021-05-06 11:30:31,937 INFO L226 Difference]: Without dead ends: 209 [2021-05-06 11:30:31,937 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 333.3ms TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:30:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-06 11:30:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 114. [2021-05-06 11:30:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 26 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 11:30:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-05-06 11:30:31,944 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 189 [2021-05-06 11:30:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:31,944 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-05-06 11:30:31,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 25 states have internal predecessors, (78), 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 11:30:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-05-06 11:30:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 11:30:31,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:31,946 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:31,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-06 11:30:31,946 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:31,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1569943242, now seen corresponding path program 23 times [2021-05-06 11:30:31,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:31,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685691345] [2021-05-06 11:30:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:31,952 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:31,952 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:31,953 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-05-06 11:30:32,506 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:32,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685691345] [2021-05-06 11:30:32,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [685691345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:32,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:32,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-06 11:30:32,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120373043] [2021-05-06 11:30:32,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 11:30:32,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:32,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 11:30:32,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-05-06 11:30:32,508 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 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 11:30:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:34,377 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2021-05-06 11:30:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 11:30:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 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 197 [2021-05-06 11:30:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:34,378 INFO L225 Difference]: With dead ends: 228 [2021-05-06 11:30:34,378 INFO L226 Difference]: Without dead ends: 217 [2021-05-06 11:30:34,379 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 436.7ms TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-05-06 11:30:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-06 11:30:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 118. [2021-05-06 11:30:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 11:30:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2021-05-06 11:30:34,386 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 197 [2021-05-06 11:30:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:34,386 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2021-05-06 11:30:34,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 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 11:30:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2021-05-06 11:30:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 11:30:34,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:34,388 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:34,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-06 11:30:34,388 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash -538231919, now seen corresponding path program 24 times [2021-05-06 11:30:34,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:34,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434655603] [2021-05-06 11:30:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:34,394 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:34,394 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:34,395 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-05-06 11:30:34,928 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:34,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434655603] [2021-05-06 11:30:34,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1434655603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:34,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:34,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-06 11:30:34,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389016177] [2021-05-06 11:30:34,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 11:30:34,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:34,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 11:30:34,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-05-06 11:30:34,934 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 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 11:30:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:36,858 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2021-05-06 11:30:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-06 11:30:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 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 205 [2021-05-06 11:30:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:36,859 INFO L225 Difference]: With dead ends: 236 [2021-05-06 11:30:36,859 INFO L226 Difference]: Without dead ends: 225 [2021-05-06 11:30:36,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 417.7ms TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-05-06 11:30:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-06 11:30:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 122. [2021-05-06 11:30:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 11:30:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2021-05-06 11:30:36,867 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 205 [2021-05-06 11:30:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:36,867 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2021-05-06 11:30:36,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 27 states have internal predecessors, (84), 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 11:30:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2021-05-06 11:30:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 11:30:36,869 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:36,869 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:36,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-06 11:30:36,869 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:36,869 INFO L82 PathProgramCache]: Analyzing trace with hash -445424916, now seen corresponding path program 25 times [2021-05-06 11:30:36,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:36,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302099398] [2021-05-06 11:30:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:36,876 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:36,877 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:36,878 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-05-06 11:30:37,600 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:37,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302099398] [2021-05-06 11:30:37,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302099398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:37,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:37,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-06 11:30:37,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14083551] [2021-05-06 11:30:37,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-06 11:30:37,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-06 11:30:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-05-06 11:30:37,601 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 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 11:30:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:39,746 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2021-05-06 11:30:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 11:30:39,746 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 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 213 [2021-05-06 11:30:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:39,748 INFO L225 Difference]: With dead ends: 244 [2021-05-06 11:30:39,748 INFO L226 Difference]: Without dead ends: 233 [2021-05-06 11:30:39,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 568.5ms TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-05-06 11:30:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-06 11:30:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 126. [2021-05-06 11:30:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 11:30:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-05-06 11:30:39,755 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 213 [2021-05-06 11:30:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:39,756 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-05-06 11:30:39,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 28 states have internal predecessors, (87), 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 11:30:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-05-06 11:30:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 11:30:39,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:39,761 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:39,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-06 11:30:39,761 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -524292281, now seen corresponding path program 26 times [2021-05-06 11:30:39,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:39,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670703832] [2021-05-06 11:30:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:39,767 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:39,767 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:39,768 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-05-06 11:30:40,382 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:40,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670703832] [2021-05-06 11:30:40,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1670703832] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:40,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:40,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-06 11:30:40,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893562268] [2021-05-06 11:30:40,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 11:30:40,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 11:30:40,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-05-06 11:30:40,385 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 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 11:30:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:42,713 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2021-05-06 11:30:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 11:30:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 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 221 [2021-05-06 11:30:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:42,715 INFO L225 Difference]: With dead ends: 252 [2021-05-06 11:30:42,715 INFO L226 Difference]: Without dead ends: 241 [2021-05-06 11:30:42,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 467.4ms TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-05-06 11:30:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-05-06 11:30:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 130. [2021-05-06 11:30:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 30 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 11:30:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2021-05-06 11:30:42,730 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 221 [2021-05-06 11:30:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:42,730 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-05-06 11:30:42,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 3.0) internal successors, (90), 29 states have internal predecessors, (90), 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 11:30:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2021-05-06 11:30:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 11:30:42,732 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:42,732 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:42,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-06 11:30:42,733 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash 344717474, now seen corresponding path program 27 times [2021-05-06 11:30:42,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:42,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93476996] [2021-05-06 11:30:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:42,740 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:42,740 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:42,742 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:30:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2021-05-06 11:30:43,324 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:43,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93476996] [2021-05-06 11:30:43,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [93476996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:43,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:43,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-06 11:30:43,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592712889] [2021-05-06 11:30:43,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 11:30:43,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:43,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 11:30:43,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2021-05-06 11:30:43,326 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 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 11:30:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:45,738 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2021-05-06 11:30:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 11:30:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 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 229 [2021-05-06 11:30:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:45,740 INFO L225 Difference]: With dead ends: 260 [2021-05-06 11:30:45,740 INFO L226 Difference]: Without dead ends: 249 [2021-05-06 11:30:45,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 448.4ms TimeCoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2021-05-06 11:30:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-05-06 11:30:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 134. [2021-05-06 11:30:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 31 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 11:30:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2021-05-06 11:30:45,748 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 229 [2021-05-06 11:30:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:45,748 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2021-05-06 11:30:45,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 30 states have internal predecessors, (93), 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 11:30:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2021-05-06 11:30:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 11:30:45,749 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:45,749 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:45,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-06 11:30:45,750 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash -661489923, now seen corresponding path program 28 times [2021-05-06 11:30:45,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:45,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866081434] [2021-05-06 11:30:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:45,757 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:45,757 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:45,758 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:30:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:30:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-05-06 11:30:46,446 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:46,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866081434] [2021-05-06 11:30:46,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [866081434] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:46,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:46,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-06 11:30:46,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369776239] [2021-05-06 11:30:46,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 11:30:46,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:46,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 11:30:46,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:30:46,447 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 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 11:30:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:49,090 INFO L93 Difference]: Finished difference Result 268 states and 328 transitions. [2021-05-06 11:30:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 11:30:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 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 237 [2021-05-06 11:30:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:49,091 INFO L225 Difference]: With dead ends: 268 [2021-05-06 11:30:49,091 INFO L226 Difference]: Without dead ends: 257 [2021-05-06 11:30:49,092 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 535.1ms TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-05-06 11:30:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-06 11:30:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 138. [2021-05-06 11:30:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 32 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 11:30:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2021-05-06 11:30:49,099 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 237 [2021-05-06 11:30:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:49,099 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2021-05-06 11:30:49,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 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 11:30:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2021-05-06 11:30:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 11:30:49,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:49,101 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:49,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-06 11:30:49,101 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1718719912, now seen corresponding path program 29 times [2021-05-06 11:30:49,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:49,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506867784] [2021-05-06 11:30:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:49,109 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:49,109 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:49,110 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:30:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:30:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:30:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2021-05-06 11:30:49,780 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:49,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506867784] [2021-05-06 11:30:49,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1506867784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:49,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:49,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-06 11:30:49,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330743804] [2021-05-06 11:30:49,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 11:30:49,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:49,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 11:30:49,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 11:30:49,782 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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 11:30:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:52,680 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2021-05-06 11:30:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 11:30:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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 245 [2021-05-06 11:30:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:52,683 INFO L225 Difference]: With dead ends: 276 [2021-05-06 11:30:52,683 INFO L226 Difference]: Without dead ends: 265 [2021-05-06 11:30:52,683 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 508.8ms TimeCoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 11:30:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-05-06 11:30:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 142. [2021-05-06 11:30:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 33 states have call successors, (33), 4 states have call predecessors, (33), 3 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 11:30:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2021-05-06 11:30:52,700 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 245 [2021-05-06 11:30:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:52,700 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2021-05-06 11:30:52,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 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 11:30:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2021-05-06 11:30:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-06 11:30:52,701 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:52,702 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:52,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-06 11:30:52,702 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash -650456397, now seen corresponding path program 30 times [2021-05-06 11:30:52,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:52,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123676009] [2021-05-06 11:30:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:52,708 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:52,708 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:52,710 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:30:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:30:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:30:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:30:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2021-05-06 11:30:53,445 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:53,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123676009] [2021-05-06 11:30:53,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2123676009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:53,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:53,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-06 11:30:53,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254311940] [2021-05-06 11:30:53,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 11:30:53,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 11:30:53,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 11:30:53,446 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 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 11:30:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:30:56,567 INFO L93 Difference]: Finished difference Result 284 states and 348 transitions. [2021-05-06 11:30:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-06 11:30:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 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 253 [2021-05-06 11:30:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:30:56,569 INFO L225 Difference]: With dead ends: 284 [2021-05-06 11:30:56,569 INFO L226 Difference]: Without dead ends: 273 [2021-05-06 11:30:56,570 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 583.7ms TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 11:30:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-05-06 11:30:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 146. [2021-05-06 11:30:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 34 states have call successors, (34), 4 states have call predecessors, (34), 3 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 11:30:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2021-05-06 11:30:56,578 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 253 [2021-05-06 11:30:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:30:56,578 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2021-05-06 11:30:56,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 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 11:30:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2021-05-06 11:30:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-06 11:30:56,580 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:30:56,580 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:30:56,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-06 11:30:56,580 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:30:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:30:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 777170958, now seen corresponding path program 31 times [2021-05-06 11:30:56,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:30:56,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515230339] [2021-05-06 11:30:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:30:56,586 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:30:56,586 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:30:56,587 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:30:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:30:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:30:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:30:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:30:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:30:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:30:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:30:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:30:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:30:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:30:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:30:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:30:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:30:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:30:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:30:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:30:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:30:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:30:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:30:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:30:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:30:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:30:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:30:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:30:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:30:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:30:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:30:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:30:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:30:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:30:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:30:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:30:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:30:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2021-05-06 11:30:57,334 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:30:57,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515230339] [2021-05-06 11:30:57,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515230339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:30:57,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:30:57,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-06 11:30:57,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965651637] [2021-05-06 11:30:57,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 11:30:57,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:30:57,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 11:30:57,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 11:30:57,336 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 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 11:31:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:00,460 INFO L93 Difference]: Finished difference Result 292 states and 358 transitions. [2021-05-06 11:31:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 11:31:00,461 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 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 261 [2021-05-06 11:31:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:00,463 INFO L225 Difference]: With dead ends: 292 [2021-05-06 11:31:00,463 INFO L226 Difference]: Without dead ends: 281 [2021-05-06 11:31:00,463 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 604.8ms TimeCoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 11:31:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-06 11:31:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 150. [2021-05-06 11:31:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 35 states have call successors, (35), 4 states have call predecessors, (35), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 11:31:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2021-05-06 11:31:00,471 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 261 [2021-05-06 11:31:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:00,471 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2021-05-06 11:31:00,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 34 states have internal predecessors, (105), 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 11:31:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2021-05-06 11:31:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-06 11:31:00,472 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:00,473 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:00,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-06 11:31:00,473 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:00,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1150354025, now seen corresponding path program 32 times [2021-05-06 11:31:00,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:00,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321261737] [2021-05-06 11:31:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:00,479 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:00,479 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:00,480 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2021-05-06 11:31:01,215 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:01,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321261737] [2021-05-06 11:31:01,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [321261737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:01,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:01,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-06 11:31:01,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058510425] [2021-05-06 11:31:01,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 11:31:01,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 11:31:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 11:31:01,217 INFO L87 Difference]: Start difference. First operand 150 states and 182 transitions. Second operand has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 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 11:31:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:04,630 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2021-05-06 11:31:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 11:31:04,631 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 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 269 [2021-05-06 11:31:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:04,633 INFO L225 Difference]: With dead ends: 300 [2021-05-06 11:31:04,633 INFO L226 Difference]: Without dead ends: 289 [2021-05-06 11:31:04,636 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 600.5ms TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 11:31:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-05-06 11:31:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 154. [2021-05-06 11:31:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 36 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 11:31:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 187 transitions. [2021-05-06 11:31:04,645 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 187 transitions. Word has length 269 [2021-05-06 11:31:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:04,645 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 187 transitions. [2021-05-06 11:31:04,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.0) internal successors, (108), 35 states have internal predecessors, (108), 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 11:31:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 187 transitions. [2021-05-06 11:31:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-06 11:31:04,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:04,647 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:04,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-06 11:31:04,647 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:04,647 INFO L82 PathProgramCache]: Analyzing trace with hash -592393788, now seen corresponding path program 33 times [2021-05-06 11:31:04,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:04,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637818547] [2021-05-06 11:31:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:04,655 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:04,655 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:04,656 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2021-05-06 11:31:05,480 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:05,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637818547] [2021-05-06 11:31:05,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [637818547] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:05,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:05,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-06 11:31:05,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362831752] [2021-05-06 11:31:05,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 11:31:05,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:05,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 11:31:05,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 11:31:05,483 INFO L87 Difference]: Start difference. First operand 154 states and 187 transitions. Second operand has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 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 11:31:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:08,927 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2021-05-06 11:31:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-06 11:31:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 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 277 [2021-05-06 11:31:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:08,928 INFO L225 Difference]: With dead ends: 308 [2021-05-06 11:31:08,929 INFO L226 Difference]: Without dead ends: 297 [2021-05-06 11:31:08,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 649.7ms TimeCoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 11:31:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-05-06 11:31:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 158. [2021-05-06 11:31:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 117 states have (on average 1.017094017094017) internal successors, (119), 117 states have internal predecessors, (119), 37 states have call successors, (37), 4 states have call predecessors, (37), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 11:31:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 192 transitions. [2021-05-06 11:31:08,937 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 192 transitions. Word has length 277 [2021-05-06 11:31:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:08,937 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 192 transitions. [2021-05-06 11:31:08,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 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 11:31:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 192 transitions. [2021-05-06 11:31:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-06 11:31:08,938 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:08,938 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:08,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-06 11:31:08,939 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:08,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:08,939 INFO L82 PathProgramCache]: Analyzing trace with hash -865270241, now seen corresponding path program 34 times [2021-05-06 11:31:08,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:08,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992844560] [2021-05-06 11:31:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:08,947 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:08,948 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:08,948 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2021-05-06 11:31:09,772 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:09,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992844560] [2021-05-06 11:31:09,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1992844560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:09,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:09,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-06 11:31:09,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091278806] [2021-05-06 11:31:09,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 11:31:09,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:09,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 11:31:09,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:31:09,774 INFO L87 Difference]: Start difference. First operand 158 states and 192 transitions. Second operand has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 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 11:31:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:13,358 INFO L93 Difference]: Finished difference Result 316 states and 388 transitions. [2021-05-06 11:31:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 11:31:13,359 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 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 285 [2021-05-06 11:31:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:13,360 INFO L225 Difference]: With dead ends: 316 [2021-05-06 11:31:13,360 INFO L226 Difference]: Without dead ends: 305 [2021-05-06 11:31:13,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 658.7ms TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 11:31:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-05-06 11:31:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 162. [2021-05-06 11:31:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 38 states have call successors, (38), 4 states have call predecessors, (38), 3 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 11:31:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2021-05-06 11:31:13,368 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 285 [2021-05-06 11:31:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:13,368 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2021-05-06 11:31:13,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 3.0) internal successors, (114), 37 states have internal predecessors, (114), 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 11:31:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2021-05-06 11:31:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 11:31:13,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:13,370 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:13,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-06 11:31:13,370 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:13,370 INFO L82 PathProgramCache]: Analyzing trace with hash -25118854, now seen corresponding path program 35 times [2021-05-06 11:31:13,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:13,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516279141] [2021-05-06 11:31:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:13,377 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:13,377 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:13,378 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2021-05-06 11:31:14,287 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:14,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516279141] [2021-05-06 11:31:14,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1516279141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:14,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:14,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-06 11:31:14,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248770829] [2021-05-06 11:31:14,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 11:31:14,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:14,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 11:31:14,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 11:31:14,289 INFO L87 Difference]: Start difference. First operand 162 states and 197 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 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 11:31:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:18,145 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2021-05-06 11:31:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 11:31:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 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 293 [2021-05-06 11:31:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:18,146 INFO L225 Difference]: With dead ends: 324 [2021-05-06 11:31:18,146 INFO L226 Difference]: Without dead ends: 313 [2021-05-06 11:31:18,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 733.7ms TimeCoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 11:31:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-05-06 11:31:18,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 166. [2021-05-06 11:31:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 39 states have call successors, (39), 4 states have call predecessors, (39), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 11:31:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2021-05-06 11:31:18,154 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 293 [2021-05-06 11:31:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:18,154 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2021-05-06 11:31:18,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 38 states have internal predecessors, (117), 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 11:31:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2021-05-06 11:31:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-06 11:31:18,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:18,156 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:18,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-06 11:31:18,156 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:18,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1923538389, now seen corresponding path program 36 times [2021-05-06 11:31:18,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:18,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25592191] [2021-05-06 11:31:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:18,168 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:18,169 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:18,169 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2021-05-06 11:31:19,057 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:19,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25592191] [2021-05-06 11:31:19,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [25592191] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:19,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:19,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-06 11:31:19,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199300481] [2021-05-06 11:31:19,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 11:31:19,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:19,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 11:31:19,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 11:31:19,059 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 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 11:31:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:23,134 INFO L93 Difference]: Finished difference Result 332 states and 408 transitions. [2021-05-06 11:31:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-06 11:31:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 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 301 [2021-05-06 11:31:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:23,137 INFO L225 Difference]: With dead ends: 332 [2021-05-06 11:31:23,137 INFO L226 Difference]: Without dead ends: 321 [2021-05-06 11:31:23,137 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 738.6ms TimeCoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 11:31:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-05-06 11:31:23,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 170. [2021-05-06 11:31:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 40 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 11:31:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2021-05-06 11:31:23,146 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 301 [2021-05-06 11:31:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:23,146 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2021-05-06 11:31:23,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 39 states have internal predecessors, (120), 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 11:31:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2021-05-06 11:31:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-05-06 11:31:23,148 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:23,148 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:23,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-06 11:31:23,148 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1033533744, now seen corresponding path program 37 times [2021-05-06 11:31:23,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:23,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248211386] [2021-05-06 11:31:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:23,155 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:23,155 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:23,156 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2021-05-06 11:31:24,196 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:24,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248211386] [2021-05-06 11:31:24,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248211386] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:24,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:24,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-06 11:31:24,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899272522] [2021-05-06 11:31:24,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-06 11:31:24,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-06 11:31:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 11:31:24,198 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 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 11:31:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:28,582 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2021-05-06 11:31:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 11:31:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 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 309 [2021-05-06 11:31:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:28,584 INFO L225 Difference]: With dead ends: 340 [2021-05-06 11:31:28,584 INFO L226 Difference]: Without dead ends: 329 [2021-05-06 11:31:28,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 839.4ms TimeCoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 11:31:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-05-06 11:31:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 174. [2021-05-06 11:31:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 41 states have call successors, (41), 4 states have call predecessors, (41), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 11:31:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2021-05-06 11:31:28,593 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 309 [2021-05-06 11:31:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:28,593 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2021-05-06 11:31:28,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 40 states have internal predecessors, (123), 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 11:31:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2021-05-06 11:31:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-05-06 11:31:28,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:28,595 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:28,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-06 11:31:28,595 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:28,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1995011701, now seen corresponding path program 38 times [2021-05-06 11:31:28,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:28,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416971333] [2021-05-06 11:31:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:28,605 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:28,605 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:28,606 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2021-05-06 11:31:29,562 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:29,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416971333] [2021-05-06 11:31:29,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [416971333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:29,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:29,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-06 11:31:29,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762244967] [2021-05-06 11:31:29,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 11:31:29,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 11:31:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 11:31:29,564 INFO L87 Difference]: Start difference. First operand 174 states and 212 transitions. Second operand has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 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 11:31:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:34,039 INFO L93 Difference]: Finished difference Result 348 states and 428 transitions. [2021-05-06 11:31:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 11:31:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 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 317 [2021-05-06 11:31:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:34,041 INFO L225 Difference]: With dead ends: 348 [2021-05-06 11:31:34,041 INFO L226 Difference]: Without dead ends: 337 [2021-05-06 11:31:34,042 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 797.9ms TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 11:31:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-05-06 11:31:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 178. [2021-05-06 11:31:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 42 states have call successors, (42), 4 states have call predecessors, (42), 3 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 11:31:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-05-06 11:31:34,049 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 317 [2021-05-06 11:31:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:34,050 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-05-06 11:31:34,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 3.0) internal successors, (126), 41 states have internal predecessors, (126), 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 11:31:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-05-06 11:31:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-05-06 11:31:34,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:34,051 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:34,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-06 11:31:34,052 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1814688026, now seen corresponding path program 39 times [2021-05-06 11:31:34,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:34,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313363318] [2021-05-06 11:31:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:34,058 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:34,058 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:34,059 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:31:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2021-05-06 11:31:35,121 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:35,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313363318] [2021-05-06 11:31:35,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1313363318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:35,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:35,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-06 11:31:35,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816711999] [2021-05-06 11:31:35,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 11:31:35,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:35,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 11:31:35,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 11:31:35,123 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 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 11:31:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:39,807 INFO L93 Difference]: Finished difference Result 356 states and 438 transitions. [2021-05-06 11:31:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 11:31:39,808 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 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 325 [2021-05-06 11:31:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:39,809 INFO L225 Difference]: With dead ends: 356 [2021-05-06 11:31:39,809 INFO L226 Difference]: Without dead ends: 345 [2021-05-06 11:31:39,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 859.0ms TimeCoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 11:31:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-05-06 11:31:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 182. [2021-05-06 11:31:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 43 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 11:31:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2021-05-06 11:31:39,822 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 325 [2021-05-06 11:31:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:39,823 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2021-05-06 11:31:39,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 42 states have internal predecessors, (129), 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 11:31:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2021-05-06 11:31:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-05-06 11:31:39,824 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:39,825 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:39,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-06 11:31:39,825 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:39,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1315698367, now seen corresponding path program 40 times [2021-05-06 11:31:39,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:39,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284683963] [2021-05-06 11:31:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:39,831 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:39,831 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:39,832 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:31:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:31:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2021-05-06 11:31:40,845 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:40,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284683963] [2021-05-06 11:31:40,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284683963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:40,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:40,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-06 11:31:40,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222770579] [2021-05-06 11:31:40,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 11:31:40,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:40,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 11:31:40,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:31:40,847 INFO L87 Difference]: Start difference. First operand 182 states and 222 transitions. Second operand has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 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 11:31:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:45,838 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2021-05-06 11:31:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 11:31:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 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 333 [2021-05-06 11:31:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:45,841 INFO L225 Difference]: With dead ends: 364 [2021-05-06 11:31:45,841 INFO L226 Difference]: Without dead ends: 353 [2021-05-06 11:31:45,841 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 840.8ms TimeCoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 11:31:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-06 11:31:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 186. [2021-05-06 11:31:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 44 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 11:31:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2021-05-06 11:31:45,850 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 333 [2021-05-06 11:31:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:45,851 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2021-05-06 11:31:45,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 3.0) internal successors, (132), 43 states have internal predecessors, (132), 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 11:31:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2021-05-06 11:31:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-05-06 11:31:45,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:45,853 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:45,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-06 11:31:45,853 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1259042972, now seen corresponding path program 41 times [2021-05-06 11:31:45,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:45,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430463492] [2021-05-06 11:31:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:45,859 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:45,859 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:45,860 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:31:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:31:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:31:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2021-05-06 11:31:46,956 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:46,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430463492] [2021-05-06 11:31:46,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430463492] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:46,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:46,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-06 11:31:46,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861291340] [2021-05-06 11:31:46,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 11:31:46,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:46,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 11:31:46,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 11:31:46,959 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 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 11:31:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:52,005 INFO L93 Difference]: Finished difference Result 372 states and 458 transitions. [2021-05-06 11:31:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 11:31:52,005 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 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 341 [2021-05-06 11:31:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:52,007 INFO L225 Difference]: With dead ends: 372 [2021-05-06 11:31:52,007 INFO L226 Difference]: Without dead ends: 361 [2021-05-06 11:31:52,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 920.6ms TimeCoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 11:31:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-05-06 11:31:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 190. [2021-05-06 11:31:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 45 states have call successors, (45), 4 states have call predecessors, (45), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 11:31:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2021-05-06 11:31:52,015 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 341 [2021-05-06 11:31:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:52,016 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2021-05-06 11:31:52,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 3.0) internal successors, (135), 44 states have internal predecessors, (135), 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 11:31:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2021-05-06 11:31:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-05-06 11:31:52,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:52,018 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:52,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-06 11:31:52,018 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:52,018 INFO L82 PathProgramCache]: Analyzing trace with hash -570991369, now seen corresponding path program 42 times [2021-05-06 11:31:52,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:52,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994153146] [2021-05-06 11:31:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:52,026 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:52,026 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:52,027 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:31:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:31:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:31:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:31:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2021-05-06 11:31:53,208 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:53,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994153146] [2021-05-06 11:31:53,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [994153146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:53,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:53,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-06 11:31:53,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187152343] [2021-05-06 11:31:53,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 11:31:53,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 11:31:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 11:31:53,210 INFO L87 Difference]: Start difference. First operand 190 states and 232 transitions. Second operand has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 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 11:31:58,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:31:58,485 INFO L93 Difference]: Finished difference Result 380 states and 468 transitions. [2021-05-06 11:31:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 11:31:58,486 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 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 349 [2021-05-06 11:31:58,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:31:58,487 INFO L225 Difference]: With dead ends: 380 [2021-05-06 11:31:58,487 INFO L226 Difference]: Without dead ends: 369 [2021-05-06 11:31:58,488 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 997.0ms TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 11:31:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-05-06 11:31:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 194. [2021-05-06 11:31:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 46 states have call successors, (46), 4 states have call predecessors, (46), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 11:31:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2021-05-06 11:31:58,496 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 349 [2021-05-06 11:31:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:31:58,496 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2021-05-06 11:31:58,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 3.0) internal successors, (138), 45 states have internal predecessors, (138), 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 11:31:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2021-05-06 11:31:58,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-05-06 11:31:58,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:31:58,498 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:31:58,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-06 11:31:58,499 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:31:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:31:58,499 INFO L82 PathProgramCache]: Analyzing trace with hash -49105326, now seen corresponding path program 43 times [2021-05-06 11:31:58,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:31:58,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025902081] [2021-05-06 11:31:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:31:58,508 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:31:58,509 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:31:58,509 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:31:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:31:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:31:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:31:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:31:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:31:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:31:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:31:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:31:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:31:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:31:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:31:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:31:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:31:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:31:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:31:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:31:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:31:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:31:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:31:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:31:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:31:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:31:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:31:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:31:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:31:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:31:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:31:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:31:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:31:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:31:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:31:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:31:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:31:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:31:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:31:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:31:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:31:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:31:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:31:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:31:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:31:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:31:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:31:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:31:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:31:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2021-05-06 11:31:59,699 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:31:59,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025902081] [2021-05-06 11:31:59,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025902081] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:31:59,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:31:59,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-06 11:31:59,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733070923] [2021-05-06 11:31:59,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 11:31:59,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:31:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 11:31:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 11:31:59,701 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 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 11:32:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:05,386 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-05-06 11:32:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 11:32:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 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 357 [2021-05-06 11:32:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:05,387 INFO L225 Difference]: With dead ends: 388 [2021-05-06 11:32:05,387 INFO L226 Difference]: Without dead ends: 377 [2021-05-06 11:32:05,388 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 994.7ms TimeCoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 11:32:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-05-06 11:32:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 198. [2021-05-06 11:32:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 47 states have call successors, (47), 4 states have call predecessors, (47), 3 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 11:32:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2021-05-06 11:32:05,396 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 357 [2021-05-06 11:32:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:05,396 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2021-05-06 11:32:05,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 3.0) internal successors, (141), 46 states have internal predecessors, (141), 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 11:32:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2021-05-06 11:32:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-06 11:32:05,398 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:05,399 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:05,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-06 11:32:05,399 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1343784109, now seen corresponding path program 44 times [2021-05-06 11:32:05,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:05,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345297053] [2021-05-06 11:32:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:05,406 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:05,406 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:05,407 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2021-05-06 11:32:06,681 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:06,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345297053] [2021-05-06 11:32:06,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [345297053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:06,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:06,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-06 11:32:06,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670970747] [2021-05-06 11:32:06,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 11:32:06,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 11:32:06,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 11:32:06,683 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 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 11:32:12,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:12,512 INFO L93 Difference]: Finished difference Result 396 states and 488 transitions. [2021-05-06 11:32:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 11:32:12,513 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 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 365 [2021-05-06 11:32:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:12,514 INFO L225 Difference]: With dead ends: 396 [2021-05-06 11:32:12,514 INFO L226 Difference]: Without dead ends: 385 [2021-05-06 11:32:12,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1081.9ms TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 11:32:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-05-06 11:32:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 202. [2021-05-06 11:32:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 48 states have call successors, (48), 4 states have call predecessors, (48), 3 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 11:32:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2021-05-06 11:32:12,522 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 365 [2021-05-06 11:32:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:12,523 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2021-05-06 11:32:12,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 3.0) internal successors, (144), 47 states have internal predecessors, (144), 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 11:32:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2021-05-06 11:32:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-05-06 11:32:12,525 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:12,525 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:12,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-06 11:32:12,525 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1815885816, now seen corresponding path program 45 times [2021-05-06 11:32:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:12,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749764142] [2021-05-06 11:32:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:12,536 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:12,536 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:12,537 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2021-05-06 11:32:13,779 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:13,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749764142] [2021-05-06 11:32:13,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1749764142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:13,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:13,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-06 11:32:13,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656089574] [2021-05-06 11:32:13,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 11:32:13,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:13,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 11:32:13,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 11:32:13,780 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 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 11:32:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:19,889 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2021-05-06 11:32:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-06 11:32:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 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 373 [2021-05-06 11:32:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:19,891 INFO L225 Difference]: With dead ends: 404 [2021-05-06 11:32:19,891 INFO L226 Difference]: Without dead ends: 393 [2021-05-06 11:32:19,891 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1029.5ms TimeCoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 11:32:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-05-06 11:32:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 206. [2021-05-06 11:32:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 153 states have internal predecessors, (155), 49 states have call successors, (49), 4 states have call predecessors, (49), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 11:32:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 252 transitions. [2021-05-06 11:32:19,899 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 252 transitions. Word has length 373 [2021-05-06 11:32:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:19,900 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 252 transitions. [2021-05-06 11:32:19,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 48 states have internal predecessors, (147), 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 11:32:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 252 transitions. [2021-05-06 11:32:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-05-06 11:32:19,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:19,902 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:19,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-06 11:32:19,902 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1714454429, now seen corresponding path program 46 times [2021-05-06 11:32:19,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:19,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128508880] [2021-05-06 11:32:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:19,913 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:19,913 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:19,914 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:32:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2021-05-06 11:32:21,175 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:21,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128508880] [2021-05-06 11:32:21,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1128508880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:21,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:21,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-06 11:32:21,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175571530] [2021-05-06 11:32:21,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 11:32:21,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 11:32:21,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 11:32:21,176 INFO L87 Difference]: Start difference. First operand 206 states and 252 transitions. Second operand has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 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 11:32:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:27,476 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2021-05-06 11:32:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 11:32:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 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 381 [2021-05-06 11:32:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:27,478 INFO L225 Difference]: With dead ends: 412 [2021-05-06 11:32:27,478 INFO L226 Difference]: Without dead ends: 401 [2021-05-06 11:32:27,478 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1082.6ms TimeCoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 11:32:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-05-06 11:32:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 210. [2021-05-06 11:32:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 50 states have call successors, (50), 4 states have call predecessors, (50), 3 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 11:32:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 257 transitions. [2021-05-06 11:32:27,486 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 257 transitions. Word has length 381 [2021-05-06 11:32:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:27,487 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 257 transitions. [2021-05-06 11:32:27,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 3.0) internal successors, (150), 49 states have internal predecessors, (150), 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 11:32:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 257 transitions. [2021-05-06 11:32:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-05-06 11:32:27,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:27,489 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:27,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-06 11:32:27,489 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:27,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1224125886, now seen corresponding path program 47 times [2021-05-06 11:32:27,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:27,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045862225] [2021-05-06 11:32:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:27,495 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:27,496 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:27,496 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:32:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:32:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2021-05-06 11:32:28,816 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:28,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045862225] [2021-05-06 11:32:28,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1045862225] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:28,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:28,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-06 11:32:28,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985461902] [2021-05-06 11:32:28,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 11:32:28,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:28,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 11:32:28,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 11:32:28,817 INFO L87 Difference]: Start difference. First operand 210 states and 257 transitions. Second operand has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 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 11:32:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:35,494 INFO L93 Difference]: Finished difference Result 420 states and 518 transitions. [2021-05-06 11:32:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 11:32:35,494 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 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 389 [2021-05-06 11:32:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:35,496 INFO L225 Difference]: With dead ends: 420 [2021-05-06 11:32:35,496 INFO L226 Difference]: Without dead ends: 409 [2021-05-06 11:32:35,496 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1111.5ms TimeCoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 11:32:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-05-06 11:32:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 214. [2021-05-06 11:32:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 51 states have call successors, (51), 4 states have call predecessors, (51), 3 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 11:32:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2021-05-06 11:32:35,505 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 389 [2021-05-06 11:32:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:35,505 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2021-05-06 11:32:35,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 3.0) internal successors, (153), 50 states have internal predecessors, (153), 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 11:32:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2021-05-06 11:32:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-05-06 11:32:35,507 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:35,507 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:35,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-06 11:32:35,507 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1661710311, now seen corresponding path program 48 times [2021-05-06 11:32:35,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:35,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013803529] [2021-05-06 11:32:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:35,513 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:35,514 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:35,514 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:32:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:32:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:32:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2021-05-06 11:32:36,882 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:36,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013803529] [2021-05-06 11:32:36,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1013803529] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:36,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:36,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-06 11:32:36,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714823262] [2021-05-06 11:32:36,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 11:32:36,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 11:32:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 11:32:36,884 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 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 11:32:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:43,668 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2021-05-06 11:32:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-06 11:32:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 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 397 [2021-05-06 11:32:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:43,670 INFO L225 Difference]: With dead ends: 428 [2021-05-06 11:32:43,670 INFO L226 Difference]: Without dead ends: 417 [2021-05-06 11:32:43,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1164.3ms TimeCoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 11:32:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-05-06 11:32:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 218. [2021-05-06 11:32:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 52 states have call successors, (52), 4 states have call predecessors, (52), 3 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 11:32:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2021-05-06 11:32:43,680 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 397 [2021-05-06 11:32:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:43,680 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2021-05-06 11:32:43,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 3.0) internal successors, (156), 51 states have internal predecessors, (156), 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 11:32:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2021-05-06 11:32:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-05-06 11:32:43,682 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:43,682 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:43,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-06 11:32:43,683 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1501337740, now seen corresponding path program 49 times [2021-05-06 11:32:43,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:43,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920446947] [2021-05-06 11:32:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:43,688 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:43,689 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:43,689 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:32:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:32:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:32:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:32:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2021-05-06 11:32:45,120 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:45,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920446947] [2021-05-06 11:32:45,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [920446947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:45,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:45,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-06 11:32:45,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949819934] [2021-05-06 11:32:45,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-06 11:32:45,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-06 11:32:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 11:32:45,122 INFO L87 Difference]: Start difference. First operand 218 states and 267 transitions. Second operand has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 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 11:32:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:32:52,222 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2021-05-06 11:32:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 11:32:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 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 405 [2021-05-06 11:32:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:32:52,224 INFO L225 Difference]: With dead ends: 436 [2021-05-06 11:32:52,224 INFO L226 Difference]: Without dead ends: 425 [2021-05-06 11:32:52,225 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1219.4ms TimeCoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 11:32:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-06 11:32:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 222. [2021-05-06 11:32:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 53 states have call successors, (53), 4 states have call predecessors, (53), 3 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 11:32:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 272 transitions. [2021-05-06 11:32:52,234 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 272 transitions. Word has length 405 [2021-05-06 11:32:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:32:52,234 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 272 transitions. [2021-05-06 11:32:52,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 3.0) internal successors, (159), 52 states have internal predecessors, (159), 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 11:32:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 272 transitions. [2021-05-06 11:32:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-05-06 11:32:52,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:32:52,243 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:32:52,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-06 11:32:52,244 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:32:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:32:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1956711473, now seen corresponding path program 50 times [2021-05-06 11:32:52,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:32:52,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731597116] [2021-05-06 11:32:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:32:52,250 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:32:52,250 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:32:52,252 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:32:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:32:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:32:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:32:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:32:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:32:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:32:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:32:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:32:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:32:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:32:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:32:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:32:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:32:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:32:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:32:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:32:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:32:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:32:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:32:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:32:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:32:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:32:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:32:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:32:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:32:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:32:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:32:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:32:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:32:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:32:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:32:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:32:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:32:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:32:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:32:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:32:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:32:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:32:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:32:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:32:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:32:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:32:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:32:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:32:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:32:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:32:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:32:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:32:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:32:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:32:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:32:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:32:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2021-05-06 11:32:53,766 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:32:53,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731597116] [2021-05-06 11:32:53,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [731597116] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:32:53,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:32:53,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-06 11:32:53,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009849770] [2021-05-06 11:32:53,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 11:32:53,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:32:53,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 11:32:53,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 11:32:53,767 INFO L87 Difference]: Start difference. First operand 222 states and 272 transitions. Second operand has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 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 11:33:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:01,182 INFO L93 Difference]: Finished difference Result 444 states and 548 transitions. [2021-05-06 11:33:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 11:33:01,182 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 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 413 [2021-05-06 11:33:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:01,184 INFO L225 Difference]: With dead ends: 444 [2021-05-06 11:33:01,184 INFO L226 Difference]: Without dead ends: 433 [2021-05-06 11:33:01,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1258.2ms TimeCoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 11:33:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-05-06 11:33:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 226. [2021-05-06 11:33:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 54 states have call successors, (54), 4 states have call predecessors, (54), 3 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 11:33:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2021-05-06 11:33:01,191 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 413 [2021-05-06 11:33:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:01,192 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2021-05-06 11:33:01,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 3.0) internal successors, (162), 53 states have internal predecessors, (162), 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 11:33:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2021-05-06 11:33:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-05-06 11:33:01,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:01,194 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:01,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-06 11:33:01,195 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2042497750, now seen corresponding path program 51 times [2021-05-06 11:33:01,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:01,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699805907] [2021-05-06 11:33:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:01,201 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:01,201 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:01,202 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2021-05-06 11:33:02,735 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:02,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699805907] [2021-05-06 11:33:02,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1699805907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:02,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:02,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-06 11:33:02,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351282692] [2021-05-06 11:33:02,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 11:33:02,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:02,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 11:33:02,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 11:33:02,736 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 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 11:33:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:10,288 INFO L93 Difference]: Finished difference Result 452 states and 558 transitions. [2021-05-06 11:33:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 11:33:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 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 421 [2021-05-06 11:33:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:10,290 INFO L225 Difference]: With dead ends: 452 [2021-05-06 11:33:10,290 INFO L226 Difference]: Without dead ends: 441 [2021-05-06 11:33:10,291 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1286.2ms TimeCoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 11:33:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-05-06 11:33:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 230. [2021-05-06 11:33:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 55 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-05-06 11:33:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2021-05-06 11:33:10,309 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 421 [2021-05-06 11:33:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:10,309 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2021-05-06 11:33:10,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 3.0) internal successors, (165), 54 states have internal predecessors, (165), 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 11:33:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2021-05-06 11:33:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-05-06 11:33:10,312 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:10,312 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:10,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-06 11:33:10,312 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash -421041275, now seen corresponding path program 52 times [2021-05-06 11:33:10,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:10,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081485539] [2021-05-06 11:33:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:10,325 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:10,325 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:10,326 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:33:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2021-05-06 11:33:11,902 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:11,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081485539] [2021-05-06 11:33:11,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2081485539] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:11,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:11,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-06 11:33:11,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801435664] [2021-05-06 11:33:11,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-06 11:33:11,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:11,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-06 11:33:11,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:33:11,903 INFO L87 Difference]: Start difference. First operand 230 states and 282 transitions. Second operand has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 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 11:33:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:19,855 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2021-05-06 11:33:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 11:33:19,856 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 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 429 [2021-05-06 11:33:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:19,857 INFO L225 Difference]: With dead ends: 460 [2021-05-06 11:33:19,857 INFO L226 Difference]: Without dead ends: 449 [2021-05-06 11:33:19,858 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1357.5ms TimeCoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 11:33:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-05-06 11:33:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 234. [2021-05-06 11:33:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 56 states have call successors, (56), 4 states have call predecessors, (56), 3 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-05-06 11:33:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2021-05-06 11:33:19,867 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 429 [2021-05-06 11:33:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:19,867 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2021-05-06 11:33:19,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 3.0) internal successors, (168), 55 states have internal predecessors, (168), 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 11:33:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2021-05-06 11:33:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-06 11:33:19,870 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:19,870 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:19,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-06 11:33:19,870 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:19,870 INFO L82 PathProgramCache]: Analyzing trace with hash 302667488, now seen corresponding path program 53 times [2021-05-06 11:33:19,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:19,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779058933] [2021-05-06 11:33:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:19,877 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:19,878 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:19,878 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:33:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:33:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2021-05-06 11:33:21,539 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:21,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779058933] [2021-05-06 11:33:21,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779058933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:21,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:21,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-06 11:33:21,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529266960] [2021-05-06 11:33:21,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 11:33:21,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:21,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 11:33:21,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 11:33:21,541 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 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 11:33:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:29,747 INFO L93 Difference]: Finished difference Result 468 states and 578 transitions. [2021-05-06 11:33:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 11:33:29,747 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 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 437 [2021-05-06 11:33:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:29,750 INFO L225 Difference]: With dead ends: 468 [2021-05-06 11:33:29,750 INFO L226 Difference]: Without dead ends: 457 [2021-05-06 11:33:29,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1442.8ms TimeCoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 11:33:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-05-06 11:33:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 238. [2021-05-06 11:33:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 57 states have call successors, (57), 4 states have call predecessors, (57), 3 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-05-06 11:33:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 292 transitions. [2021-05-06 11:33:29,760 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 292 transitions. Word has length 437 [2021-05-06 11:33:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:29,760 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 292 transitions. [2021-05-06 11:33:29,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 56 states have internal predecessors, (171), 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 11:33:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 292 transitions. [2021-05-06 11:33:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-05-06 11:33:29,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:29,763 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:29,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-06 11:33:29,763 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:29,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2124040389, now seen corresponding path program 54 times [2021-05-06 11:33:29,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:29,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97627259] [2021-05-06 11:33:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:29,769 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:29,769 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:29,770 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:33:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:33:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:33:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2021-05-06 11:33:31,456 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:31,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97627259] [2021-05-06 11:33:31,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [97627259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:31,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:31,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-06 11:33:31,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117812407] [2021-05-06 11:33:31,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 11:33:31,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 11:33:31,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 11:33:31,458 INFO L87 Difference]: Start difference. First operand 238 states and 292 transitions. Second operand has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 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 11:33:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:39,995 INFO L93 Difference]: Finished difference Result 476 states and 588 transitions. [2021-05-06 11:33:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-06 11:33:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 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 445 [2021-05-06 11:33:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:39,997 INFO L225 Difference]: With dead ends: 476 [2021-05-06 11:33:39,997 INFO L226 Difference]: Without dead ends: 465 [2021-05-06 11:33:39,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1468.2ms TimeCoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 11:33:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-05-06 11:33:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 242. [2021-05-06 11:33:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 58 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-06 11:33:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 297 transitions. [2021-05-06 11:33:40,006 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 297 transitions. Word has length 445 [2021-05-06 11:33:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:40,006 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 297 transitions. [2021-05-06 11:33:40,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 3.0) internal successors, (174), 57 states have internal predecessors, (174), 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 11:33:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 297 transitions. [2021-05-06 11:33:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-05-06 11:33:40,008 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:40,008 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:40,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-06 11:33:40,009 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1011577706, now seen corresponding path program 55 times [2021-05-06 11:33:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:40,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157461073] [2021-05-06 11:33:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:40,014 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:40,014 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:40,015 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:33:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:33:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:33:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:33:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2021-05-06 11:33:41,743 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:41,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157461073] [2021-05-06 11:33:41,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [157461073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:41,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:41,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-06 11:33:41,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926933459] [2021-05-06 11:33:41,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 11:33:41,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:41,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 11:33:41,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 11:33:41,744 INFO L87 Difference]: Start difference. First operand 242 states and 297 transitions. Second operand has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 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 11:33:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:50,427 INFO L93 Difference]: Finished difference Result 484 states and 598 transitions. [2021-05-06 11:33:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 11:33:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 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 453 [2021-05-06 11:33:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:50,429 INFO L225 Difference]: With dead ends: 484 [2021-05-06 11:33:50,429 INFO L226 Difference]: Without dead ends: 473 [2021-05-06 11:33:50,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1483.8ms TimeCoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 11:33:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-05-06 11:33:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 246. [2021-05-06 11:33:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 59 states have call successors, (59), 4 states have call predecessors, (59), 3 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-05-06 11:33:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2021-05-06 11:33:50,439 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 453 [2021-05-06 11:33:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:50,439 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2021-05-06 11:33:50,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 3.0) internal successors, (177), 58 states have internal predecessors, (177), 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 11:33:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2021-05-06 11:33:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-05-06 11:33:50,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:50,442 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:50,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-06 11:33:50,442 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:50,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2092029681, now seen corresponding path program 56 times [2021-05-06 11:33:50,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:50,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470372108] [2021-05-06 11:33:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:50,448 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:33:50,448 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:33:50,449 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:33:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:33:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:33:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:33:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:33:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:33:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:33:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:33:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:33:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:33:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:33:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:33:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:33:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:33:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:33:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:33:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:33:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:33:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:33:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:33:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:33:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:33:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:33:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:33:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:33:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:33:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:33:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:33:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:33:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:33:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:33:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:33:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:33:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:33:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:33:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:33:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:33:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:33:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:33:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:33:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:33:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:33:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:33:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:33:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:33:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:33:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:33:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:33:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:33:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:33:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:33:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:33:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:33:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:33:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:33:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:33:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2021-05-06 11:33:52,325 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:52,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470372108] [2021-05-06 11:33:52,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [470372108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:52,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:52,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-06 11:33:52,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825720523] [2021-05-06 11:33:52,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 11:33:52,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 11:33:52,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 11:33:52,326 INFO L87 Difference]: Start difference. First operand 246 states and 302 transitions. Second operand has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 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 11:34:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:34:01,421 INFO L93 Difference]: Finished difference Result 492 states and 608 transitions. [2021-05-06 11:34:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 11:34:01,422 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 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 461 [2021-05-06 11:34:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:34:01,424 INFO L225 Difference]: With dead ends: 492 [2021-05-06 11:34:01,424 INFO L226 Difference]: Without dead ends: 481 [2021-05-06 11:34:01,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1621.5ms TimeCoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 11:34:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-05-06 11:34:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 250. [2021-05-06 11:34:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 60 states have call successors, (60), 4 states have call predecessors, (60), 3 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-05-06 11:34:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 307 transitions. [2021-05-06 11:34:01,434 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 307 transitions. Word has length 461 [2021-05-06 11:34:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:34:01,435 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 307 transitions. [2021-05-06 11:34:01,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 3.0) internal successors, (180), 59 states have internal predecessors, (180), 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 11:34:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 307 transitions. [2021-05-06 11:34:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-05-06 11:34:01,438 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:34:01,438 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:34:01,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-06 11:34:01,438 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:34:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:34:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1696110156, now seen corresponding path program 57 times [2021-05-06 11:34:01,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:34:01,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864802162] [2021-05-06 11:34:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:34:01,444 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:34:01,444 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:34:01,445 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:34:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:34:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:34:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:34:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:34:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:34:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:34:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:34:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:34:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:34:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:34:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:34:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:34:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:34:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:34:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:34:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:34:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:34:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:34:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:34:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:34:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:34:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:34:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:34:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:34:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:34:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:34:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:34:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:34:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:34:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:34:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:34:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:34:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:34:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:34:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:34:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:34:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:34:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:34:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:34:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:34:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:34:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:34:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:34:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:34:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:34:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:34:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:34:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:34:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:34:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:34:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:34:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:34:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:34:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:34:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:34:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:34:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:34:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:34:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2021-05-06 11:34:03,468 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:34:03,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864802162] [2021-05-06 11:34:03,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1864802162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:34:03,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:34:03,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-06 11:34:03,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288555551] [2021-05-06 11:34:03,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 11:34:03,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:34:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 11:34:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 11:34:03,470 INFO L87 Difference]: Start difference. First operand 250 states and 307 transitions. Second operand has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 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 11:34:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:34:12,887 INFO L93 Difference]: Finished difference Result 500 states and 618 transitions. [2021-05-06 11:34:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-06 11:34:12,887 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 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 469 [2021-05-06 11:34:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:34:12,889 INFO L225 Difference]: With dead ends: 500 [2021-05-06 11:34:12,889 INFO L226 Difference]: Without dead ends: 489 [2021-05-06 11:34:12,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1776.7ms TimeCoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 11:34:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-05-06 11:34:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 254. [2021-05-06 11:34:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 189 states have internal predecessors, (191), 61 states have call successors, (61), 4 states have call predecessors, (61), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-06 11:34:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 312 transitions. [2021-05-06 11:34:12,896 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 312 transitions. Word has length 469 [2021-05-06 11:34:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:34:12,897 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 312 transitions. [2021-05-06 11:34:12,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 3.0) internal successors, (183), 60 states have internal predecessors, (183), 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 11:34:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 312 transitions. [2021-05-06 11:34:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-05-06 11:34:12,899 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:34:12,899 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:34:12,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-06 11:34:12,899 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:34:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:34:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1252248231, now seen corresponding path program 58 times [2021-05-06 11:34:12,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:34:12,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818428640] [2021-05-06 11:34:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:34:12,912 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:34:12,912 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:34:12,913 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:34:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:34:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:34:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:34:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:34:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:34:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:34:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:34:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:34:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:34:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:34:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:34:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:34:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:34:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:34:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:34:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:34:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:34:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:34:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:34:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:34:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:34:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:34:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:34:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:34:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:34:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:34:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:34:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:34:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:34:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:34:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:34:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:34:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:34:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:34:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:34:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:34:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:34:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:34:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:34:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:34:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:34:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:34:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:34:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:34:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:34:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:34:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:34:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:34:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:34:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:34:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:34:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:34:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:34:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:34:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:34:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:34:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:34:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:34:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:34:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2021-05-06 11:34:14,863 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:34:14,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818428640] [2021-05-06 11:34:14,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1818428640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:34:14,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:34:14,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-06 11:34:14,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277624203] [2021-05-06 11:34:14,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-06 11:34:14,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:34:14,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-06 11:34:14,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:34:14,864 INFO L87 Difference]: Start difference. First operand 254 states and 312 transitions. Second operand has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 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 11:34:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:34:24,664 INFO L93 Difference]: Finished difference Result 508 states and 628 transitions. [2021-05-06 11:34:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 11:34:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 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 477 [2021-05-06 11:34:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:34:24,666 INFO L225 Difference]: With dead ends: 508 [2021-05-06 11:34:24,666 INFO L226 Difference]: Without dead ends: 497 [2021-05-06 11:34:24,666 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1705.4ms TimeCoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 11:34:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-05-06 11:34:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 258. [2021-05-06 11:34:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 62 states have call successors, (62), 4 states have call predecessors, (62), 3 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-05-06 11:34:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2021-05-06 11:34:24,676 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 477 [2021-05-06 11:34:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:34:24,676 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2021-05-06 11:34:24,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 3.0) internal successors, (186), 61 states have internal predecessors, (186), 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 11:34:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2021-05-06 11:34:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-05-06 11:34:24,679 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:34:24,679 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:34:24,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-06 11:34:24,679 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:34:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:34:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash 269382658, now seen corresponding path program 59 times [2021-05-06 11:34:24,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:34:24,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812406891] [2021-05-06 11:34:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:34:24,685 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:34:24,685 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:34:24,686 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:34:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:34:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:34:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:34:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:34:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:34:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:34:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:34:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:34:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:34:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:34:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:34:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:34:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:34:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:34:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:34:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:34:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:34:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:34:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:34:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:34:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:34:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:34:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:34:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:34:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:34:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:34:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:34:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:34:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:34:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:34:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:34:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:34:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:34:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:34:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:34:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:34:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:34:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:34:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:34:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:34:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:34:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:34:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:34:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:34:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:34:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:34:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:34:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:34:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:34:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:34:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:34:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:34:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:34:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:34:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:34:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:34:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:34:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:34:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:34:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:34:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2021-05-06 11:34:26,675 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:34:26,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812406891] [2021-05-06 11:34:26,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812406891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:34:26,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:34:26,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-06 11:34:26,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308519346] [2021-05-06 11:34:26,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 11:34:26,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:34:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 11:34:26,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 11:34:26,677 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 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 11:34:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:34:36,793 INFO L93 Difference]: Finished difference Result 516 states and 638 transitions. [2021-05-06 11:34:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 11:34:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 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 485 [2021-05-06 11:34:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:34:36,795 INFO L225 Difference]: With dead ends: 516 [2021-05-06 11:34:36,796 INFO L226 Difference]: Without dead ends: 505 [2021-05-06 11:34:36,796 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1709.5ms TimeCoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 11:34:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-05-06 11:34:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 262. [2021-05-06 11:34:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 63 states have call successors, (63), 4 states have call predecessors, (63), 3 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-05-06 11:34:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2021-05-06 11:34:36,813 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 485 [2021-05-06 11:34:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:34:36,814 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2021-05-06 11:34:36,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 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 11:34:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2021-05-06 11:34:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-05-06 11:34:36,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:34:36,817 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:34:36,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-06 11:34:36,817 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:34:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:34:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1391226275, now seen corresponding path program 60 times [2021-05-06 11:34:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:34:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266146309] [2021-05-06 11:34:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:34:36,822 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:34:36,822 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:34:36,823 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:34:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:34:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:34:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:34:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:34:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:34:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:34:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:34:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:34:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:34:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:34:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:34:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:34:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:34:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:34:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:34:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:34:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:34:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:34:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:34:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:34:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:34:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:34:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:34:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:34:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:34:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:34:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:34:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:34:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:34:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:34:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:34:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:34:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:34:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:34:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:34:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:34:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:34:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:34:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:34:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:34:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:34:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:34:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:34:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:34:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:34:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:34:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:34:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:34:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:34:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:34:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:34:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:34:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:34:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:34:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:34:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:34:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:34:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:34:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:34:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:34:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:34:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2021-05-06 11:34:38,961 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:34:38,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266146309] [2021-05-06 11:34:38,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [266146309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:34:38,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:34:38,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-06 11:34:38,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796249525] [2021-05-06 11:34:38,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 11:34:38,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:34:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 11:34:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 11:34:38,963 INFO L87 Difference]: Start difference. First operand 262 states and 322 transitions. Second operand has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-05-06 11:34:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:34:49,691 INFO L93 Difference]: Finished difference Result 524 states and 648 transitions. [2021-05-06 11:34:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-06 11:34:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 493 [2021-05-06 11:34:49,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:34:49,693 INFO L225 Difference]: With dead ends: 524 [2021-05-06 11:34:49,693 INFO L226 Difference]: Without dead ends: 513 [2021-05-06 11:34:49,694 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1894.3ms TimeCoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 11:34:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-05-06 11:34:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 266. [2021-05-06 11:34:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 64 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-05-06 11:34:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions. [2021-05-06 11:34:49,702 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 493 [2021-05-06 11:34:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:34:49,702 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 327 transitions. [2021-05-06 11:34:49,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 3.0) internal successors, (192), 63 states have internal predecessors, (192), 62 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-05-06 11:34:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions. [2021-05-06 11:34:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-05-06 11:34:49,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:34:49,705 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:34:49,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-06 11:34:49,705 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:34:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:34:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 778970552, now seen corresponding path program 61 times [2021-05-06 11:34:49,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:34:49,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793475991] [2021-05-06 11:34:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:34:49,716 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:34:49,716 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:34:49,717 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:34:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:34:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:34:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:34:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:34:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:34:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:34:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:34:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:34:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:34:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:34:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:34:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:34:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:34:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:34:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:34:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:34:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:34:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:34:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:34:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:34:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:34:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:34:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:34:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:34:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:34:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:34:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:34:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:34:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:34:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:34:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:34:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:34:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:34:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:34:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:34:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:34:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:34:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:34:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:34:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:34:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:34:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:34:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:34:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:34:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:34:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:34:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:34:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:34:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:34:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:34:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:34:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:34:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:34:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:34:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:34:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:34:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:34:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:34:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:34:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:34:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:34:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:34:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:34:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2021-05-06 11:34:51,740 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:34:51,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793475991] [2021-05-06 11:34:51,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [793475991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:34:51,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:34:51,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-06 11:34:51,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614290614] [2021-05-06 11:34:51,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-06 11:34:51,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:34:51,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-06 11:34:51,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2021-05-06 11:34:51,742 INFO L87 Difference]: Start difference. First operand 266 states and 327 transitions. Second operand has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-05-06 11:35:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:02,575 INFO L93 Difference]: Finished difference Result 532 states and 658 transitions. [2021-05-06 11:35:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 11:35:02,575 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 501 [2021-05-06 11:35:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:02,578 INFO L225 Difference]: With dead ends: 532 [2021-05-06 11:35:02,578 INFO L226 Difference]: Without dead ends: 521 [2021-05-06 11:35:02,578 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1743.2ms TimeCoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2021-05-06 11:35:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-05-06 11:35:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 270. [2021-05-06 11:35:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 201 states have internal predecessors, (203), 65 states have call successors, (65), 4 states have call predecessors, (65), 3 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-05-06 11:35:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2021-05-06 11:35:02,589 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 501 [2021-05-06 11:35:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:02,590 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2021-05-06 11:35:02,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 3.0) internal successors, (195), 64 states have internal predecessors, (195), 63 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-05-06 11:35:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2021-05-06 11:35:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-05-06 11:35:02,592 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:02,593 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:02,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-06 11:35:02,593 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1244058093, now seen corresponding path program 62 times [2021-05-06 11:35:02,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:02,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228930438] [2021-05-06 11:35:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:02,599 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:02,600 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:35:02,600 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:35:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:35:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:35:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:35:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:35:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:35:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:35:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:35:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:35:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:35:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:35:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:35:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:35:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:35:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:35:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:35:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:35:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:35:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:35:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:35:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:35:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:35:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:35:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:35:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:35:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:35:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:35:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:35:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:35:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:35:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:35:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:35:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:35:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:35:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:35:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:35:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:35:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:35:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:35:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:35:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:35:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:35:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:35:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:35:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:35:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:35:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:35:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:35:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:35:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:35:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:35:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:35:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:35:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:35:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:35:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:35:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:35:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:35:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:35:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:35:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:35:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:35:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2021-05-06 11:35:04,907 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:04,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228930438] [2021-05-06 11:35:04,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1228930438] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:04,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:04,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-06 11:35:04,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902563537] [2021-05-06 11:35:04,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 11:35:04,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:04,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 11:35:04,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 11:35:04,909 INFO L87 Difference]: Start difference. First operand 270 states and 332 transitions. Second operand has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-05-06 11:35:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:16,079 INFO L93 Difference]: Finished difference Result 540 states and 668 transitions. [2021-05-06 11:35:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 11:35:16,079 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 509 [2021-05-06 11:35:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:16,081 INFO L225 Difference]: With dead ends: 540 [2021-05-06 11:35:16,081 INFO L226 Difference]: Without dead ends: 529 [2021-05-06 11:35:16,082 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1950.9ms TimeCoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 11:35:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-05-06 11:35:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 274. [2021-05-06 11:35:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 204 states have internal predecessors, (206), 66 states have call successors, (66), 4 states have call predecessors, (66), 3 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-05-06 11:35:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 337 transitions. [2021-05-06 11:35:16,090 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 337 transitions. Word has length 509 [2021-05-06 11:35:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:16,090 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 337 transitions. [2021-05-06 11:35:16,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 3.0) internal successors, (198), 65 states have internal predecessors, (198), 64 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-05-06 11:35:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 337 transitions. [2021-05-06 11:35:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-05-06 11:35:16,093 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:16,093 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:16,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-06 11:35:16,093 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:16,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2047847278, now seen corresponding path program 63 times [2021-05-06 11:35:16,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:16,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696612230] [2021-05-06 11:35:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:16,100 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:16,100 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:35:16,101 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:35:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:35:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:35:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:35:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:35:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:35:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:35:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:35:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:35:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:35:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:35:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:35:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:35:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:35:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:35:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:35:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:35:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:35:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:35:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:35:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:35:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:35:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:35:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:35:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:35:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:35:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:35:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:35:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:35:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:35:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:35:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:35:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:35:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:35:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:35:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:35:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:35:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:35:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:35:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:35:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:35:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:35:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:35:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:35:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:35:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:35:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:35:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:35:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:35:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:35:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:35:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:35:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:35:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:35:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:35:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:35:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:35:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:35:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:35:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:35:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:35:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:35:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:35:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2021-05-06 11:35:18,372 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:18,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696612230] [2021-05-06 11:35:18,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696612230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:18,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:18,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-06 11:35:18,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535216532] [2021-05-06 11:35:18,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 11:35:18,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 11:35:18,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 11:35:18,375 INFO L87 Difference]: Start difference. First operand 274 states and 337 transitions. Second operand has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-05-06 11:35:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:29,886 INFO L93 Difference]: Finished difference Result 548 states and 678 transitions. [2021-05-06 11:35:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 11:35:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 517 [2021-05-06 11:35:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:29,889 INFO L225 Difference]: With dead ends: 548 [2021-05-06 11:35:29,889 INFO L226 Difference]: Without dead ends: 537 [2021-05-06 11:35:29,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1979.8ms TimeCoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 11:35:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-05-06 11:35:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 278. [2021-05-06 11:35:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 67 states have call successors, (67), 4 states have call predecessors, (67), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-05-06 11:35:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2021-05-06 11:35:29,901 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 517 [2021-05-06 11:35:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:29,901 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2021-05-06 11:35:29,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 3.0) internal successors, (201), 66 states have internal predecessors, (201), 65 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-05-06 11:35:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2021-05-06 11:35:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-05-06 11:35:29,904 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:29,904 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:29,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-06 11:35:29,904 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash -959668791, now seen corresponding path program 64 times [2021-05-06 11:35:29,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:29,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428338718] [2021-05-06 11:35:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:29,910 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:29,910 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:35:29,911 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:35:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:35:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:35:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:35:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:35:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:35:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:35:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:35:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:35:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:35:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:35:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:35:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:35:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:35:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:35:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:35:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:35:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:35:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:35:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:35:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:35:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:35:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:35:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:35:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:35:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:35:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:35:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:35:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:35:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:35:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:35:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:35:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:35:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:35:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:35:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:35:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:35:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:35:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:35:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:35:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:35:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:35:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:35:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:35:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:35:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:35:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:35:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:35:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:35:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:35:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:35:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:35:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:35:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:35:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:35:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:35:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:35:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:35:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:35:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:35:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:35:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:35:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:35:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:35:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2021-05-06 11:35:32,174 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:32,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428338718] [2021-05-06 11:35:32,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [428338718] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:32,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:32,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-06 11:35:32,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473279329] [2021-05-06 11:35:32,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-06 11:35:32,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:32,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-06 11:35:32,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:35:32,177 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-05-06 11:35:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:43,951 INFO L93 Difference]: Finished difference Result 556 states and 688 transitions. [2021-05-06 11:35:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 11:35:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 525 [2021-05-06 11:35:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:43,953 INFO L225 Difference]: With dead ends: 556 [2021-05-06 11:35:43,953 INFO L226 Difference]: Without dead ends: 545 [2021-05-06 11:35:43,953 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1963.5ms TimeCoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 11:35:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-05-06 11:35:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 282. [2021-05-06 11:35:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 68 states have call successors, (68), 4 states have call predecessors, (68), 3 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-05-06 11:35:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 347 transitions. [2021-05-06 11:35:43,961 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 347 transitions. Word has length 525 [2021-05-06 11:35:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:43,961 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 347 transitions. [2021-05-06 11:35:43,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 67 states have internal predecessors, (204), 66 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-05-06 11:35:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 347 transitions. [2021-05-06 11:35:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-05-06 11:35:43,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:43,964 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:43,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-06 11:35:43,964 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:43,965 INFO L82 PathProgramCache]: Analyzing trace with hash -53803740, now seen corresponding path program 65 times [2021-05-06 11:35:43,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:43,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398777593] [2021-05-06 11:35:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:43,972 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:43,972 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:35:43,973 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:35:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:35:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:35:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:35:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:35:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:35:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:35:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:35:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:35:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:35:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:35:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:35:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:35:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:35:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:35:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:35:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:35:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:35:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:35:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:35:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:35:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:35:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:35:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:35:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:35:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:35:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:35:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:35:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:35:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:35:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:35:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:35:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:35:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:35:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:35:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:35:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:35:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:35:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:35:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:35:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:35:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:35:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:35:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:35:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:35:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:35:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:35:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:35:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:35:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:35:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:35:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:35:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:35:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:35:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:35:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:35:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:35:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:35:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:35:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:35:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:35:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:35:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:35:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:35:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:35:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2021-05-06 11:35:46,250 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:46,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398777593] [2021-05-06 11:35:46,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [398777593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:46,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:46,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-06 11:35:46,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515277818] [2021-05-06 11:35:46,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 11:35:46,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:46,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 11:35:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 11:35:46,252 INFO L87 Difference]: Start difference. First operand 282 states and 347 transitions. Second operand has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-05-06 11:35:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:58,212 INFO L93 Difference]: Finished difference Result 564 states and 698 transitions. [2021-05-06 11:35:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 11:35:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 533 [2021-05-06 11:35:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:58,215 INFO L225 Difference]: With dead ends: 564 [2021-05-06 11:35:58,215 INFO L226 Difference]: Without dead ends: 553 [2021-05-06 11:35:58,215 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1996.5ms TimeCoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 11:35:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-05-06 11:35:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 286. [2021-05-06 11:35:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 213 states have internal predecessors, (215), 69 states have call successors, (69), 4 states have call predecessors, (69), 3 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-05-06 11:35:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 352 transitions. [2021-05-06 11:35:58,223 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 352 transitions. Word has length 533 [2021-05-06 11:35:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:58,224 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 352 transitions. [2021-05-06 11:35:58,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 3.0) internal successors, (207), 68 states have internal predecessors, (207), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-05-06 11:35:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 352 transitions. [2021-05-06 11:35:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-05-06 11:35:58,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:58,226 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:58,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-06 11:35:58,226 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:58,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1849302657, now seen corresponding path program 66 times [2021-05-06 11:35:58,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:58,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227154525] [2021-05-06 11:35:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:58,235 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:35:58,235 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:35:58,236 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:36:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:36:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:36:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:36:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:36:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:36:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:36:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:36:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:36:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:36:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:36:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:36:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:36:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:36:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:36:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:36:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:36:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:36:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:36:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:36:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:36:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:36:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:36:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:36:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:36:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:36:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:36:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:36:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:36:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:36:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:36:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:36:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:36:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:36:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:36:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:36:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:36:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:36:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:36:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:36:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:36:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:36:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:36:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:36:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:36:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:36:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:36:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:36:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:36:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:36:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:36:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:36:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:36:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:36:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:36:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:36:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:36:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:36:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:36:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:36:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:36:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:36:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:36:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:36:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:36:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:36:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2021-05-06 11:36:00,587 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:00,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227154525] [2021-05-06 11:36:00,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [227154525] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:00,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:00,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-06 11:36:00,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462060408] [2021-05-06 11:36:00,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 11:36:00,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:00,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 11:36:00,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 11:36:00,588 INFO L87 Difference]: Start difference. First operand 286 states and 352 transitions. Second operand has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-05-06 11:36:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:13,185 INFO L93 Difference]: Finished difference Result 572 states and 708 transitions. [2021-05-06 11:36:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-06 11:36:13,186 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 541 [2021-05-06 11:36:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:13,188 INFO L225 Difference]: With dead ends: 572 [2021-05-06 11:36:13,188 INFO L226 Difference]: Without dead ends: 561 [2021-05-06 11:36:13,188 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2043.8ms TimeCoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 11:36:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-05-06 11:36:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 290. [2021-05-06 11:36:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 216 states have internal predecessors, (218), 70 states have call successors, (70), 4 states have call predecessors, (70), 3 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-05-06 11:36:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2021-05-06 11:36:13,200 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 541 [2021-05-06 11:36:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:13,200 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2021-05-06 11:36:13,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 3.0) internal successors, (210), 69 states have internal predecessors, (210), 68 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-05-06 11:36:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2021-05-06 11:36:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-05-06 11:36:13,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:13,203 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:13,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-06 11:36:13,203 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash 276312794, now seen corresponding path program 67 times [2021-05-06 11:36:13,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:13,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125514834] [2021-05-06 11:36:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:13,209 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:13,209 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:13,210 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:36:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:36:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:36:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:36:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:36:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:36:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:36:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:36:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:36:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:36:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:36:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:36:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:36:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:36:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:36:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:36:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:36:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:36:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:36:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:36:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:36:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:36:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:36:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:36:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:36:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:36:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:36:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:36:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:36:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:36:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:36:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:36:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:36:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:36:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:36:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:36:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:36:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:36:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:36:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:36:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:36:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:36:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:36:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:36:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:36:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:36:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:36:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:36:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:36:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:36:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:36:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:36:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:36:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:36:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:36:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:36:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:36:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:36:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:36:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:36:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:36:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:36:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:36:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:36:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:36:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:36:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:36:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2021-05-06 11:36:15,558 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:15,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125514834] [2021-05-06 11:36:15,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [125514834] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:15,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:15,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-06 11:36:15,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556672512] [2021-05-06 11:36:15,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 11:36:15,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 11:36:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 11:36:15,560 INFO L87 Difference]: Start difference. First operand 290 states and 357 transitions. Second operand has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-05-06 11:36:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:28,213 INFO L93 Difference]: Finished difference Result 580 states and 718 transitions. [2021-05-06 11:36:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 11:36:28,214 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 549 [2021-05-06 11:36:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:28,216 INFO L225 Difference]: With dead ends: 580 [2021-05-06 11:36:28,216 INFO L226 Difference]: Without dead ends: 569 [2021-05-06 11:36:28,216 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2087.8ms TimeCoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 11:36:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-05-06 11:36:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2021-05-06 11:36:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 219 states have internal predecessors, (221), 71 states have call successors, (71), 4 states have call predecessors, (71), 3 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-05-06 11:36:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2021-05-06 11:36:28,224 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 549 [2021-05-06 11:36:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:28,225 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2021-05-06 11:36:28,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 3.0) internal successors, (213), 70 states have internal predecessors, (213), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-05-06 11:36:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2021-05-06 11:36:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-05-06 11:36:28,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:28,227 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:28,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-06 11:36:28,227 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:28,227 INFO L82 PathProgramCache]: Analyzing trace with hash 412940597, now seen corresponding path program 68 times [2021-05-06 11:36:28,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:28,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211715965] [2021-05-06 11:36:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:28,245 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:28,245 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:28,246 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:36:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:36:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:36:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:36:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:36:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:36:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:36:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:36:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:36:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:36:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:36:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:36:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:36:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:36:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:36:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:36:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:36:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:36:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:36:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:36:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:36:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:36:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:36:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:36:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:36:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:36:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:36:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:36:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:36:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:36:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:36:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:36:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:36:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:36:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:36:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:36:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:36:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:36:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:36:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:36:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:36:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:36:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:36:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:36:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:36:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:36:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:36:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:36:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:36:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:36:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:36:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:36:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:36:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:36:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:36:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:36:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:36:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:36:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:36:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:36:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:36:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:36:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:36:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:36:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:36:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:36:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:36:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:36:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2021-05-06 11:36:30,668 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:30,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211715965] [2021-05-06 11:36:30,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211715965] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:30,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:30,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-06 11:36:30,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575162634] [2021-05-06 11:36:30,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 11:36:30,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 11:36:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 11:36:30,670 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-05-06 11:36:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:43,711 INFO L93 Difference]: Finished difference Result 588 states and 728 transitions. [2021-05-06 11:36:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 11:36:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 557 [2021-05-06 11:36:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:43,713 INFO L225 Difference]: With dead ends: 588 [2021-05-06 11:36:43,713 INFO L226 Difference]: Without dead ends: 577 [2021-05-06 11:36:43,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2150.1ms TimeCoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 11:36:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-05-06 11:36:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 298. [2021-05-06 11:36:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 72 states have call successors, (72), 4 states have call predecessors, (72), 3 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-05-06 11:36:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2021-05-06 11:36:43,723 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 557 [2021-05-06 11:36:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:43,724 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2021-05-06 11:36:43,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 3.0) internal successors, (216), 71 states have internal predecessors, (216), 70 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2021-05-06 11:36:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2021-05-06 11:36:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-05-06 11:36:43,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:43,727 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:43,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-06 11:36:43,727 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1592734864, now seen corresponding path program 69 times [2021-05-06 11:36:43,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:43,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625346011] [2021-05-06 11:36:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:43,733 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:43,733 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:43,734 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:36:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:36:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:36:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:36:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:36:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:36:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:36:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:36:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:36:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:36:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:36:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:36:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:36:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:36:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:36:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:36:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:36:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:36:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:36:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:36:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:36:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:36:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:36:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:36:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:36:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:36:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:36:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:36:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:36:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:36:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:36:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:36:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:36:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:36:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:36:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:36:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:36:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:36:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:36:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:36:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:36:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:36:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:36:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:36:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:36:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:36:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:36:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:36:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:36:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:36:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:36:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:36:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:36:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:36:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:36:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:36:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:36:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:36:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:36:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:36:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:36:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:36:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:36:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:36:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:36:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:36:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:36:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:36:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:36:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2021-05-06 11:36:46,191 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:46,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625346011] [2021-05-06 11:36:46,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1625346011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:46,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:46,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-06 11:36:46,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353965104] [2021-05-06 11:36:46,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 11:36:46,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 11:36:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 11:36:46,193 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-05-06 11:36:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:59,631 INFO L93 Difference]: Finished difference Result 596 states and 738 transitions. [2021-05-06 11:36:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-06 11:36:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 565 [2021-05-06 11:36:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:59,634 INFO L225 Difference]: With dead ends: 596 [2021-05-06 11:36:59,634 INFO L226 Difference]: Without dead ends: 585 [2021-05-06 11:36:59,634 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2188.6ms TimeCoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 11:36:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-05-06 11:36:59,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 302. [2021-05-06 11:36:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 225 states have (on average 1.008888888888889) internal successors, (227), 225 states have internal predecessors, (227), 73 states have call successors, (73), 4 states have call predecessors, (73), 3 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-06 11:36:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 372 transitions. [2021-05-06 11:36:59,643 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 372 transitions. Word has length 565 [2021-05-06 11:36:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:59,644 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 372 transitions. [2021-05-06 11:36:59,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 3.0) internal successors, (219), 72 states have internal predecessors, (219), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2021-05-06 11:36:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 372 transitions. [2021-05-06 11:36:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-05-06 11:36:59,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:59,646 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:59,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-06 11:36:59,646 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1389763349, now seen corresponding path program 70 times [2021-05-06 11:36:59,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:59,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338102026] [2021-05-06 11:36:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:59,665 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:59,665 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:36:59,666 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:37:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:37:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:37:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:37:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:37:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:37:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:37:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:37:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:37:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:37:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:37:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:37:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:37:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:37:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:37:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:37:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:37:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:37:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:37:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:37:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:37:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:37:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:37:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:37:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:37:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:37:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:37:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:37:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:37:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:37:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:37:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:37:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:37:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:37:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:37:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:37:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:37:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:37:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:37:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:37:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:37:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:37:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:37:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:37:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:37:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:37:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:37:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:37:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:37:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:37:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:37:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:37:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:37:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:37:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:37:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:37:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:37:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:37:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:37:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:37:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:37:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:37:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:37:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:37:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:37:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:37:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:37:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:37:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:37:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:37:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2021-05-06 11:37:02,237 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:02,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338102026] [2021-05-06 11:37:02,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1338102026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:02,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:02,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-06 11:37:02,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039655996] [2021-05-06 11:37:02,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-06 11:37:02,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-06 11:37:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:37:02,238 INFO L87 Difference]: Start difference. First operand 302 states and 372 transitions. Second operand has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-05-06 11:37:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:16,138 INFO L93 Difference]: Finished difference Result 604 states and 748 transitions. [2021-05-06 11:37:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 11:37:16,139 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Word has length 573 [2021-05-06 11:37:16,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:16,141 INFO L225 Difference]: With dead ends: 604 [2021-05-06 11:37:16,141 INFO L226 Difference]: Without dead ends: 593 [2021-05-06 11:37:16,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2265.6ms TimeCoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 11:37:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-05-06 11:37:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 306. [2021-05-06 11:37:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 74 states have call successors, (74), 4 states have call predecessors, (74), 3 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-06 11:37:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 377 transitions. [2021-05-06 11:37:16,153 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 377 transitions. Word has length 573 [2021-05-06 11:37:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:16,153 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 377 transitions. [2021-05-06 11:37:16,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 3.0) internal successors, (222), 73 states have internal predecessors, (222), 72 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-05-06 11:37:16,154 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 377 transitions. [2021-05-06 11:37:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-05-06 11:37:16,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:16,157 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:16,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-06 11:37:16,157 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:16,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash -502789562, now seen corresponding path program 71 times [2021-05-06 11:37:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:16,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881700989] [2021-05-06 11:37:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:16,162 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:16,163 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:16,163 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:37:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:37:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:37:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:37:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:37:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:37:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:37:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:37:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:37:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:37:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:37:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:37:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:37:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:37:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:37:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:37:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:37:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:37:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:37:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:37:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:37:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:37:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:37:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:37:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:37:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:37:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:37:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:37:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:37:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:37:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:37:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:37:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:37:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:37:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:37:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:37:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:37:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:37:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:37:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:37:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:37:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:37:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:37:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:37:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:37:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:37:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:37:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:37:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:37:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:37:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:37:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:37:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:37:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:37:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:37:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:37:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:37:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:37:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:37:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:37:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:37:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:37:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:37:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:37:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:37:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:37:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:37:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:37:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:37:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:37:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:37:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2021-05-06 11:37:18,738 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:18,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881700989] [2021-05-06 11:37:18,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [881700989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:18,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:18,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-06 11:37:18,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273327346] [2021-05-06 11:37:18,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 11:37:18,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:18,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 11:37:18,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 11:37:18,739 INFO L87 Difference]: Start difference. First operand 306 states and 377 transitions. Second operand has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-06 11:37:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:32,947 INFO L93 Difference]: Finished difference Result 612 states and 758 transitions. [2021-05-06 11:37:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 11:37:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 581 [2021-05-06 11:37:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:32,949 INFO L225 Difference]: With dead ends: 612 [2021-05-06 11:37:32,949 INFO L226 Difference]: Without dead ends: 601 [2021-05-06 11:37:32,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2301.4ms TimeCoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 11:37:32,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-05-06 11:37:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 310. [2021-05-06 11:37:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 75 states have call successors, (75), 4 states have call predecessors, (75), 3 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2021-05-06 11:37:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 382 transitions. [2021-05-06 11:37:32,961 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 382 transitions. Word has length 581 [2021-05-06 11:37:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:32,961 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 382 transitions. [2021-05-06 11:37:32,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 3.0) internal successors, (225), 74 states have internal predecessors, (225), 73 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-06 11:37:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 382 transitions. [2021-05-06 11:37:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2021-05-06 11:37:32,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:32,965 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:32,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-06 11:37:32,965 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:32,965 INFO L82 PathProgramCache]: Analyzing trace with hash -247159647, now seen corresponding path program 72 times [2021-05-06 11:37:32,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:32,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242190148] [2021-05-06 11:37:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:32,971 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:32,972 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:32,972 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:37:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:37:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:37:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:37:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:37:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:37:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:37:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:37:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:37:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:37:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:37:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:37:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:37:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:37:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:37:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:37:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:37:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:37:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:37:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:37:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:37:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:37:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:37:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:37:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:37:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:37:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:37:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:37:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:37:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:37:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:37:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:37:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:37:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:37:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:37:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:37:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:37:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:37:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:37:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:37:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:37:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:37:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:37:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:37:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:37:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:37:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:37:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:37:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:37:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:37:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:37:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:37:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:37:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:37:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:37:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:37:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:37:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:37:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:37:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:37:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:37:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:37:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:37:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:37:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:37:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:37:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:37:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:37:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:37:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:37:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:37:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:37:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2021-05-06 11:37:35,672 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:35,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242190148] [2021-05-06 11:37:35,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [242190148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:35,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:35,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-06 11:37:35,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981629477] [2021-05-06 11:37:35,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 11:37:35,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 11:37:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 11:37:35,674 INFO L87 Difference]: Start difference. First operand 310 states and 382 transitions. Second operand has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-06 11:37:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:50,254 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2021-05-06 11:37:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-06 11:37:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Word has length 589 [2021-05-06 11:37:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:50,257 INFO L225 Difference]: With dead ends: 620 [2021-05-06 11:37:50,257 INFO L226 Difference]: Without dead ends: 609 [2021-05-06 11:37:50,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2407.7ms TimeCoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 11:37:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-05-06 11:37:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 314. [2021-05-06 11:37:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 234 states have internal predecessors, (236), 76 states have call successors, (76), 4 states have call predecessors, (76), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-05-06 11:37:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 387 transitions. [2021-05-06 11:37:50,268 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 387 transitions. Word has length 589 [2021-05-06 11:37:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:50,268 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 387 transitions. [2021-05-06 11:37:50,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 3.0) internal successors, (228), 75 states have internal predecessors, (228), 74 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-06 11:37:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 387 transitions. [2021-05-06 11:37:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-05-06 11:37:50,271 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:50,271 INFO L523 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:50,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-06 11:37:50,271 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:50,272 INFO L82 PathProgramCache]: Analyzing trace with hash -476400644, now seen corresponding path program 73 times [2021-05-06 11:37:50,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:50,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395138790] [2021-05-06 11:37:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:50,277 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:37:50,277 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:37:50,278 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:37:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:37:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:37:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:37:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:37:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:37:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:37:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:37:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:37:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:37:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:37:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:37:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:37:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:37:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:37:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:37:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:37:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:37:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:37:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:37:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:37:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:37:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:37:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:37:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:37:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:37:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:37:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:37:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:37:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:37:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:37:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:37:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:37:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:37:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:37:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:37:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:37:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:37:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:37:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:37:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:37:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:37:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:37:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:37:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:37:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:37:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:37:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:37:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:37:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:37:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:37:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:37:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:37:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:37:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:37:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:37:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:37:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:37:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:37:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:37:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:37:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:37:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:37:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:37:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:37:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:37:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:37:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:37:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:37:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:37:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:37:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:37:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:37:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2021-05-06 11:37:53,008 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:53,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395138790] [2021-05-06 11:37:53,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [395138790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:53,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:53,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-06 11:37:53,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743802294] [2021-05-06 11:37:53,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-06 11:37:53,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-06 11:37:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2021-05-06 11:37:53,010 INFO L87 Difference]: Start difference. First operand 314 states and 387 transitions. Second operand has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2021-05-06 11:38:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:07,999 INFO L93 Difference]: Finished difference Result 628 states and 778 transitions. [2021-05-06 11:38:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 11:38:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 597 [2021-05-06 11:38:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:08,002 INFO L225 Difference]: With dead ends: 628 [2021-05-06 11:38:08,002 INFO L226 Difference]: Without dead ends: 617 [2021-05-06 11:38:08,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2452.6ms TimeCoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2021-05-06 11:38:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-05-06 11:38:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 318. [2021-05-06 11:38:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 237 states have internal predecessors, (239), 77 states have call successors, (77), 4 states have call predecessors, (77), 3 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-05-06 11:38:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2021-05-06 11:38:08,012 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 597 [2021-05-06 11:38:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:08,012 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2021-05-06 11:38:08,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 3.0) internal successors, (231), 76 states have internal predecessors, (231), 75 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2021-05-06 11:38:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2021-05-06 11:38:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2021-05-06 11:38:08,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:08,015 INFO L523 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:08,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-06 11:38:08,015 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:08,016 INFO L82 PathProgramCache]: Analyzing trace with hash -691718057, now seen corresponding path program 74 times [2021-05-06 11:38:08,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:08,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060279017] [2021-05-06 11:38:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:08,020 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:08,021 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:08,021 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:08,103 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 0 [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 7 [2021-05-06 11:38:10,718 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 15 [2021-05-06 11:38:10,719 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 23 [2021-05-06 11:38:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:38:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:38:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:38:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:38:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:38:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:38:10,726 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 79 [2021-05-06 11:38:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [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 95 [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 103 [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 111 [2021-05-06 11:38:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:38:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:38:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:38:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:38:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:38:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:38:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:38:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:38:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:38:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:38:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:38:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:38:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:38:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:38:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:38:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:38:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:38:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:38:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:38:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:38:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:38:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:38:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:38:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:38:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:38:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:38:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:38:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:38:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:38:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:38:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:38:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:38:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:38:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:38:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:38:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:38:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:38:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:38:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:38:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:38:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:38:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:38:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:38:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:38:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:38:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:38:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:38:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:38:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:38:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:38:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:38:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:38:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:38:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:38:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:38:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:38:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:38:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:38:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:38:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:38:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2021-05-06 11:38:10,812 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:10,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060279017] [2021-05-06 11:38:10,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2060279017] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:10,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:10,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-06 11:38:10,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786653181] [2021-05-06 11:38:10,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 11:38:10,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:10,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 11:38:10,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 11:38:10,814 INFO L87 Difference]: Start difference. First operand 318 states and 392 transitions. Second operand has 78 states, 78 states have (on average 3.0) internal successors, (234), 77 states have internal predecessors, (234), 76 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-05-06 11:38:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:26,260 INFO L93 Difference]: Finished difference Result 636 states and 788 transitions. [2021-05-06 11:38:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 11:38:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.0) internal successors, (234), 77 states have internal predecessors, (234), 76 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Word has length 605 [2021-05-06 11:38:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:26,263 INFO L225 Difference]: With dead ends: 636 [2021-05-06 11:38:26,263 INFO L226 Difference]: Without dead ends: 625 [2021-05-06 11:38:26,264 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2507.4ms TimeCoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 11:38:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-05-06 11:38:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 322. [2021-05-06 11:38:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 240 states have internal predecessors, (242), 78 states have call successors, (78), 4 states have call predecessors, (78), 3 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-05-06 11:38:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 397 transitions. [2021-05-06 11:38:26,273 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 397 transitions. Word has length 605 [2021-05-06 11:38:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:26,273 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 397 transitions. [2021-05-06 11:38:26,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 3.0) internal successors, (234), 77 states have internal predecessors, (234), 76 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-05-06 11:38:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 397 transitions. [2021-05-06 11:38:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-05-06 11:38:26,276 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:26,276 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:26,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-06 11:38:26,276 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash -41995854, now seen corresponding path program 75 times [2021-05-06 11:38:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:26,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006151621] [2021-05-06 11:38:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:26,284 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:26,284 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:26,285 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:38:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:38:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:38:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:38:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:38:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:38:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:38:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:38:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:38:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:38:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:38:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:38:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:38:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:38:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:38:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:38:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:38:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:38:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:38:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:38:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:38:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:38:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:38:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:38:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:38:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:38:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:38:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:38:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:38:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:38:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:38:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:38:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:38:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:38:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:38:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:38:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:38:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:38:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:38:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:38:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:38:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:38:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:38:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:38:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:38:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:38:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:38:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:38:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:38:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:38:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:38:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:38:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:38:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:38:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:38:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:38:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:38:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:38:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:38:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:38:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:38:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:38:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:38:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:38:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:38:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:38:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:38:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:38:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:38:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:38:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:38:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:38:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:38:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:38:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:38:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2021-05-06 11:38:29,160 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:29,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006151621] [2021-05-06 11:38:29,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2006151621] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:29,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:29,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-06 11:38:29,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779750818] [2021-05-06 11:38:29,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 11:38:29,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:29,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 11:38:29,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 11:38:29,162 INFO L87 Difference]: Start difference. First operand 322 states and 397 transitions. Second operand has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-05-06 11:38:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:38:44,821 INFO L93 Difference]: Finished difference Result 644 states and 798 transitions. [2021-05-06 11:38:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 11:38:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 613 [2021-05-06 11:38:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:38:44,824 INFO L225 Difference]: With dead ends: 644 [2021-05-06 11:38:44,824 INFO L226 Difference]: Without dead ends: 633 [2021-05-06 11:38:44,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2581.1ms TimeCoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 11:38:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-05-06 11:38:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 326. [2021-05-06 11:38:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 243 states have (on average 1.008230452674897) internal successors, (245), 243 states have internal predecessors, (245), 79 states have call successors, (79), 4 states have call predecessors, (79), 3 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-05-06 11:38:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 402 transitions. [2021-05-06 11:38:44,834 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 402 transitions. Word has length 613 [2021-05-06 11:38:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:38:44,834 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 402 transitions. [2021-05-06 11:38:44,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 3.0) internal successors, (237), 78 states have internal predecessors, (237), 77 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-05-06 11:38:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 402 transitions. [2021-05-06 11:38:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2021-05-06 11:38:44,844 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:38:44,844 INFO L523 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:38:44,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-06 11:38:44,845 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:38:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:38:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1618763763, now seen corresponding path program 76 times [2021-05-06 11:38:44,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:38:44,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096595467] [2021-05-06 11:38:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:38:44,850 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:38:44,850 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:38:44,850 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:38:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:38:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:38:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:38:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:38:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:38:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:38:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:38:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:38:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:38:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:38:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:38:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:38:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:38:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:38:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:38:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:38:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:38:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:38:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:38:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:38:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:38:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:38:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:38:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:38:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:38:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:38:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:38:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:38:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:38:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:38:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:38:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:38:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:38:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:38:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:38:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:38:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:38:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:38:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:38:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:38:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:38:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:38:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:38:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:38:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:38:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:38:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:38:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:38:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:38:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:38:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:38:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:38:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:38:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:38:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:38:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:38:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:38:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:38:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:38:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:38:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:38:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:38:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:38:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:38:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:38:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:38:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:38:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:38:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:38:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:38:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:38:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:38:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:38:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:38:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:38:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:38:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:38:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:38:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2021-05-06 11:38:47,753 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:38:47,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096595467] [2021-05-06 11:38:47,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2096595467] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:38:47,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:38:47,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-06 11:38:47,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164532633] [2021-05-06 11:38:47,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-06 11:38:47,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:38:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-06 11:38:47,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:38:47,755 INFO L87 Difference]: Start difference. First operand 326 states and 402 transitions. Second operand has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-05-06 11:39:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:03,962 INFO L93 Difference]: Finished difference Result 652 states and 808 transitions. [2021-05-06 11:39:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 11:39:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 621 [2021-05-06 11:39:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:03,965 INFO L225 Difference]: With dead ends: 652 [2021-05-06 11:39:03,965 INFO L226 Difference]: Without dead ends: 641 [2021-05-06 11:39:03,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2607.4ms TimeCoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 11:39:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-05-06 11:39:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 330. [2021-05-06 11:39:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 246 states have (on average 1.008130081300813) internal successors, (248), 246 states have internal predecessors, (248), 80 states have call successors, (80), 4 states have call predecessors, (80), 3 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-05-06 11:39:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 407 transitions. [2021-05-06 11:39:03,974 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 407 transitions. Word has length 621 [2021-05-06 11:39:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:03,974 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 407 transitions. [2021-05-06 11:39:03,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 3.0) internal successors, (240), 79 states have internal predecessors, (240), 78 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-05-06 11:39:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 407 transitions. [2021-05-06 11:39:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2021-05-06 11:39:03,977 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:03,977 INFO L523 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:03,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-06 11:39:03,977 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 428704616, now seen corresponding path program 77 times [2021-05-06 11:39:03,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:03,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702734304] [2021-05-06 11:39:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:03,981 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:03,982 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:03,982 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:39:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:39:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:39:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:39:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:39:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:39:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:39:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:39:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:39:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:39:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:39:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:39:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:39:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:39:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:39:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:39:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:39:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:39:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:39:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:39:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:39:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:39:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:39:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:39:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:39:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:39:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:39:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:39:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:39:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:39:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:39:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:39:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:39:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:39:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:39:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:39:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:39:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:39:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:39:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:39:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:39:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:39:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:39:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:39:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:39:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:39:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:39:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:39:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:39:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:39:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:39:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:39:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:39:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:39:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:39:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:39:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:39:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:39:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:39:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:39:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:39:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:39:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:39:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:39:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:39:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:39:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:39:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:39:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:39:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:39:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:39:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:39:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:39:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:39:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:39:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:39:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:39:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2021-05-06 11:39:06,989 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:06,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702734304] [2021-05-06 11:39:06,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1702734304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:06,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:06,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-06 11:39:06,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965109007] [2021-05-06 11:39:06,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 11:39:06,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 11:39:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 11:39:06,991 INFO L87 Difference]: Start difference. First operand 330 states and 407 transitions. Second operand has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-05-06 11:39:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:23,708 INFO L93 Difference]: Finished difference Result 660 states and 818 transitions. [2021-05-06 11:39:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 11:39:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 629 [2021-05-06 11:39:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:23,710 INFO L225 Difference]: With dead ends: 660 [2021-05-06 11:39:23,710 INFO L226 Difference]: Without dead ends: 649 [2021-05-06 11:39:23,710 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2710.5ms TimeCoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 11:39:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-05-06 11:39:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 334. [2021-05-06 11:39:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 249 states have internal predecessors, (251), 81 states have call successors, (81), 4 states have call predecessors, (81), 3 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-05-06 11:39:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 412 transitions. [2021-05-06 11:39:23,722 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 412 transitions. Word has length 629 [2021-05-06 11:39:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:23,722 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 412 transitions. [2021-05-06 11:39:23,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 3.0) internal successors, (243), 80 states have internal predecessors, (243), 79 states have call successors, (80), 3 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-05-06 11:39:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 412 transitions. [2021-05-06 11:39:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-05-06 11:39:23,725 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:23,725 INFO L523 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:23,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-06 11:39:23,725 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:23,725 INFO L82 PathProgramCache]: Analyzing trace with hash -581444669, now seen corresponding path program 78 times [2021-05-06 11:39:23,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:23,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114820994] [2021-05-06 11:39:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:23,730 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:23,730 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:23,730 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:39:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:39:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:39:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:39:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:39:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:39:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:39:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:39:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:39:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:39:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:39:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:39:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:39:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:39:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:39:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:39:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:39:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:39:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:39:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:39:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:39:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:39:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:39:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:39:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:39:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:39:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:39:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:39:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:39:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:39:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:39:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:39:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:39:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:39:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:39:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:39:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:39:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:39:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:39:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:39:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:39:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:39:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:39:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:39:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:39:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:39:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:39:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:39:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:39:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:39:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:39:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:39:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:39:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:39:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:39:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:39:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:39:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:39:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:39:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:39:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:39:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:39:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:39:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:39:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:39:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:39:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:39:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:39:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:39:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:39:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:39:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:39:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:39:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:39:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:39:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:39:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:39:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:39:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2021-05-06 11:39:26,757 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:26,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114820994] [2021-05-06 11:39:26,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114820994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:26,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:26,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-06 11:39:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617493813] [2021-05-06 11:39:26,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 11:39:26,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 11:39:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 11:39:26,759 INFO L87 Difference]: Start difference. First operand 334 states and 412 transitions. Second operand has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-05-06 11:39:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:39:43,835 INFO L93 Difference]: Finished difference Result 668 states and 828 transitions. [2021-05-06 11:39:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-06 11:39:43,836 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 637 [2021-05-06 11:39:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:39:43,838 INFO L225 Difference]: With dead ends: 668 [2021-05-06 11:39:43,838 INFO L226 Difference]: Without dead ends: 657 [2021-05-06 11:39:43,838 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2755.0ms TimeCoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 11:39:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-05-06 11:39:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 338. [2021-05-06 11:39:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 82 states have call successors, (82), 4 states have call predecessors, (82), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-05-06 11:39:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 417 transitions. [2021-05-06 11:39:43,848 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 417 transitions. Word has length 637 [2021-05-06 11:39:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:39:43,849 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 417 transitions. [2021-05-06 11:39:43,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 3.0) internal successors, (246), 81 states have internal predecessors, (246), 80 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-05-06 11:39:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 417 transitions. [2021-05-06 11:39:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2021-05-06 11:39:43,852 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:39:43,853 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:39:43,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-06 11:39:43,853 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:39:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:39:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1906157854, now seen corresponding path program 79 times [2021-05-06 11:39:43,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:39:43,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269003979] [2021-05-06 11:39:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:39:43,858 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:39:43,858 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:39:43,859 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:39:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:39:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:39:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:39:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:39:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:39:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:39:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:39:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:39:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:39:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:39:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:39:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:39:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:39:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:39:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:39:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:39:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:39:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:39:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:39:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:39:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:39:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:39:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:39:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:39:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:39:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:39:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:39:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:39:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:39:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:39:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:39:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:39:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:39:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:39:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:39:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:39:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:39:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:39:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:39:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:39:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:39:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:39:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:39:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:39:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:39:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:39:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:39:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:39:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:39:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:39:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:39:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:39:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:39:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:39:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:39:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:39:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:39:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:39:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:39:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:39:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:39:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:39:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:39:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:39:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:39:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:39:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:39:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:39:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:39:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:39:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:39:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:39:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:39:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:39:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:39:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:39:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:39:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:39:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:39:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:39:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:39:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2021-05-06 11:39:47,026 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:39:47,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269003979] [2021-05-06 11:39:47,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1269003979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:39:47,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:39:47,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-06 11:39:47,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348943647] [2021-05-06 11:39:47,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 11:39:47,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:39:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 11:39:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 11:39:47,028 INFO L87 Difference]: Start difference. First operand 338 states and 417 transitions. Second operand has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-05-06 11:40:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:04,488 INFO L93 Difference]: Finished difference Result 676 states and 838 transitions. [2021-05-06 11:40:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 11:40:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 645 [2021-05-06 11:40:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:04,491 INFO L225 Difference]: With dead ends: 676 [2021-05-06 11:40:04,491 INFO L226 Difference]: Without dead ends: 665 [2021-05-06 11:40:04,491 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2826.4ms TimeCoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 11:40:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-05-06 11:40:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 342. [2021-05-06 11:40:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 255 states have (on average 1.007843137254902) internal successors, (257), 255 states have internal predecessors, (257), 83 states have call successors, (83), 4 states have call predecessors, (83), 3 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2021-05-06 11:40:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 422 transitions. [2021-05-06 11:40:04,502 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 422 transitions. Word has length 645 [2021-05-06 11:40:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:04,502 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 422 transitions. [2021-05-06 11:40:04,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 3.0) internal successors, (249), 82 states have internal predecessors, (249), 81 states have call successors, (82), 3 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-05-06 11:40:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 422 transitions. [2021-05-06 11:40:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-05-06 11:40:04,505 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:04,505 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:04,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-06 11:40:04,505 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1914301305, now seen corresponding path program 80 times [2021-05-06 11:40:04,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:04,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903413175] [2021-05-06 11:40:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:04,510 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:04,510 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:04,511 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:40:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:40:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:40:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:40:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:40:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:40:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:40:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:40:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:40:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:40:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:40:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:40:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:40:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:40:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:40:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:40:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:40:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:40:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:40:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:40:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:40:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:40:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:40:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:40:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:40:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:40:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:40:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:40:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:40:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:40:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:40:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:40:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:40:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:40:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:40:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:40:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:40:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:40:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:40:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:40:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:40:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:40:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:40:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:40:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:40:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:40:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:40:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:40:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:40:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:40:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:40:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:40:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:40:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:40:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:40:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:40:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:40:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:40:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:40:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:40:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:40:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:40:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:40:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:40:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:40:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:40:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:40:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:40:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:40:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:40:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:40:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:40:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:40:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:40:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:40:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:40:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:40:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:40:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:40:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-06 11:40:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2021-05-06 11:40:07,918 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:07,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903413175] [2021-05-06 11:40:07,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [903413175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:07,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:07,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-06 11:40:07,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766921065] [2021-05-06 11:40:07,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 11:40:07,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 11:40:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 11:40:07,920 INFO L87 Difference]: Start difference. First operand 342 states and 422 transitions. Second operand has 84 states, 84 states have (on average 3.0) internal successors, (252), 83 states have internal predecessors, (252), 82 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-05-06 11:40:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:26,138 INFO L93 Difference]: Finished difference Result 684 states and 848 transitions. [2021-05-06 11:40:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 11:40:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.0) internal successors, (252), 83 states have internal predecessors, (252), 82 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 653 [2021-05-06 11:40:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:26,141 INFO L225 Difference]: With dead ends: 684 [2021-05-06 11:40:26,141 INFO L226 Difference]: Without dead ends: 673 [2021-05-06 11:40:26,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3008.5ms TimeCoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 11:40:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-05-06 11:40:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 346. [2021-05-06 11:40:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 258 states have internal predecessors, (260), 84 states have call successors, (84), 4 states have call predecessors, (84), 3 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-05-06 11:40:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 427 transitions. [2021-05-06 11:40:26,153 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 427 transitions. Word has length 653 [2021-05-06 11:40:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:26,153 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 427 transitions. [2021-05-06 11:40:26,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 3.0) internal successors, (252), 83 states have internal predecessors, (252), 82 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-05-06 11:40:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 427 transitions. [2021-05-06 11:40:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-05-06 11:40:26,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:26,156 INFO L523 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:26,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-06 11:40:26,156 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1886936364, now seen corresponding path program 81 times [2021-05-06 11:40:26,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:26,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167475289] [2021-05-06 11:40:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:26,161 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:26,161 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:26,162 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:40:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:40:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:40:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:40:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:40:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:40:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:40:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:40:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:40:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:40:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:40:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:40:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:40:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:40:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:40:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:40:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:40:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:40:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:40:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:40:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:40:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:40:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:40:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:40:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:40:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:40:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:40:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:40:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:40:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:40:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:40:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:40:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:40:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:40:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:40:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:40:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:40:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:40:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:40:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:40:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:40:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:40:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:40:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:40:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:40:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:40:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:40:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:40:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:40:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:40:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:40:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:40:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:40:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:40:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:40:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:40:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:40:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:40:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:40:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:40:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:40:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:40:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:40:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:40:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:40:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:40:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:40:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:40:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:40:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:40:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:40:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:40:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:40:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:40:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:40:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:40:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:40:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:40:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:40:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-06 11:40:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-05-06 11:40:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2021-05-06 11:40:29,468 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:29,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167475289] [2021-05-06 11:40:29,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [167475289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:29,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:29,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-05-06 11:40:29,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261794902] [2021-05-06 11:40:29,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 11:40:29,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:29,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 11:40:29,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=6892, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 11:40:29,469 INFO L87 Difference]: Start difference. First operand 346 states and 427 transitions. Second operand has 85 states, 85 states have (on average 3.0) internal successors, (255), 84 states have internal predecessors, (255), 83 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2021-05-06 11:40:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:40:47,825 INFO L93 Difference]: Finished difference Result 692 states and 858 transitions. [2021-05-06 11:40:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-06 11:40:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.0) internal successors, (255), 84 states have internal predecessors, (255), 83 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 661 [2021-05-06 11:40:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:40:47,828 INFO L225 Difference]: With dead ends: 692 [2021-05-06 11:40:47,828 INFO L226 Difference]: Without dead ends: 681 [2021-05-06 11:40:47,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2983.4ms TimeCoverageRelationStatistics Valid=248, Invalid=6892, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 11:40:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-05-06 11:40:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 350. [2021-05-06 11:40:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 261 states have internal predecessors, (263), 85 states have call successors, (85), 4 states have call predecessors, (85), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2021-05-06 11:40:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 432 transitions. [2021-05-06 11:40:47,840 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 432 transitions. Word has length 661 [2021-05-06 11:40:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:40:47,840 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 432 transitions. [2021-05-06 11:40:47,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 3.0) internal successors, (255), 84 states have internal predecessors, (255), 83 states have call successors, (84), 3 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2021-05-06 11:40:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 432 transitions. [2021-05-06 11:40:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2021-05-06 11:40:47,843 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:40:47,843 INFO L523 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:40:47,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-06 11:40:47,844 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:40:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:40:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1885221073, now seen corresponding path program 82 times [2021-05-06 11:40:47,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:40:47,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794873813] [2021-05-06 11:40:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:40:47,848 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:40:47,848 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:40:47,849 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:40:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:40:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:40:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:40:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:40:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:40:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:40:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:40:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:40:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:40:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:40:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:40:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:40:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:40:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:40:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:40:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:40:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:40:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:40:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:40:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:40:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:40:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:40:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:40:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:40:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:40:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:40:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:40:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:40:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:40:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:40:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:40:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:40:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:40:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:40:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:40:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:40:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:40:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:40:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:40:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:40:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:40:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:40:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:40:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:40:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:40:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:40:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:40:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:40:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:40:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:40:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:40:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:40:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:40:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:40:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:40:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:40:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:40:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:40:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:40:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:40:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:40:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:40:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:40:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:40:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:40:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:40:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:40:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:40:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:40:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:40:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:40:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:40:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:40:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:40:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:40:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:40:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:40:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:40:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:40:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:40:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-06 11:40:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-05-06 11:40:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2021-05-06 11:40:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:40:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2021-05-06 11:40:51,230 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:40:51,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794873813] [2021-05-06 11:40:51,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1794873813] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:40:51,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:40:51,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-06 11:40:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600283530] [2021-05-06 11:40:51,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-06 11:40:51,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:40:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-06 11:40:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=7059, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:40:51,231 INFO L87 Difference]: Start difference. First operand 350 states and 432 transitions. Second operand has 86 states, 86 states have (on average 3.0) internal successors, (258), 85 states have internal predecessors, (258), 84 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-05-06 11:41:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:09,948 INFO L93 Difference]: Finished difference Result 700 states and 868 transitions. [2021-05-06 11:41:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 11:41:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.0) internal successors, (258), 85 states have internal predecessors, (258), 84 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) Word has length 669 [2021-05-06 11:41:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:09,950 INFO L225 Difference]: With dead ends: 700 [2021-05-06 11:41:09,950 INFO L226 Difference]: Without dead ends: 689 [2021-05-06 11:41:09,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3073.1ms TimeCoverageRelationStatistics Valid=251, Invalid=7059, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 11:41:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-05-06 11:41:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 354. [2021-05-06 11:41:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 264 states have internal predecessors, (266), 86 states have call successors, (86), 4 states have call predecessors, (86), 3 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-05-06 11:41:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 437 transitions. [2021-05-06 11:41:09,964 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 437 transitions. Word has length 669 [2021-05-06 11:41:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:09,964 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 437 transitions. [2021-05-06 11:41:09,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 3.0) internal successors, (258), 85 states have internal predecessors, (258), 84 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-05-06 11:41:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 437 transitions. [2021-05-06 11:41:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2021-05-06 11:41:09,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:09,968 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:09,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-06 11:41:09,969 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1294168202, now seen corresponding path program 83 times [2021-05-06 11:41:09,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:09,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035190869] [2021-05-06 11:41:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:09,974 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:09,974 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:09,975 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:41:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:41:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:41:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:41:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:41:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:41:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:41:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:41:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:41:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:41:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:41:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:41:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:41:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:41:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:41:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:41:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:41:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:41:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:41:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:41:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:41:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:41:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:41:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:41:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:41:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:41:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:41:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:41:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:41:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:41:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:41:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:41:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:41:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:41:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:41:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:41:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:41:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:41:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:41:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:41:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:41:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:41:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:41:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:41:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:41:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:41:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:41:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:41:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:41:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:41:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:41:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:41:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:41:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:41:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:41:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:41:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:41:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:41:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:41:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:41:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:41:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:41:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:41:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:41:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:41:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:41:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:41:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:41:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:41:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:41:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:41:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:41:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:41:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:41:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:41:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:41:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:41:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:41:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:41:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-06 11:41:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-05-06 11:41:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2021-05-06 11:41:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2021-05-06 11:41:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2021-05-06 11:41:13,439 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:13,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035190869] [2021-05-06 11:41:13,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1035190869] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:13,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:13,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2021-05-06 11:41:13,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033457219] [2021-05-06 11:41:13,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 11:41:13,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 11:41:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=7228, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 11:41:13,441 INFO L87 Difference]: Start difference. First operand 354 states and 437 transitions. Second operand has 87 states, 87 states have (on average 3.0) internal successors, (261), 86 states have internal predecessors, (261), 85 states have call successors, (86), 3 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2021-05-06 11:41:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:32,458 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2021-05-06 11:41:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 11:41:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.0) internal successors, (261), 86 states have internal predecessors, (261), 85 states have call successors, (86), 3 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 677 [2021-05-06 11:41:32,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:32,460 INFO L225 Difference]: With dead ends: 708 [2021-05-06 11:41:32,460 INFO L226 Difference]: Without dead ends: 697 [2021-05-06 11:41:32,461 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3098.9ms TimeCoverageRelationStatistics Valid=254, Invalid=7228, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 11:41:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-05-06 11:41:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 358. [2021-05-06 11:41:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 267 states have internal predecessors, (269), 87 states have call successors, (87), 4 states have call predecessors, (87), 3 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-05-06 11:41:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 442 transitions. [2021-05-06 11:41:32,470 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 442 transitions. Word has length 677 [2021-05-06 11:41:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:32,470 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 442 transitions. [2021-05-06 11:41:32,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 3.0) internal successors, (261), 86 states have internal predecessors, (261), 85 states have call successors, (86), 3 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2021-05-06 11:41:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 442 transitions. [2021-05-06 11:41:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2021-05-06 11:41:32,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:32,473 INFO L523 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:41:32,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-06 11:41:32,473 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:32,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1211660571, now seen corresponding path program 84 times [2021-05-06 11:41:32,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:32,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607047053] [2021-05-06 11:41:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:32,480 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:41:32,480 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-06 11:41:32,481 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-06 11:41:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-06 11:41:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 11:41:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 11:41:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-06 11:41:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-06 11:41:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-06 11:41:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-06 11:41:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-06 11:41:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-06 11:41:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-06 11:41:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-06 11:41:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-06 11:41:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-06 11:41:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-06 11:41:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-06 11:41:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-06 11:41:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-06 11:41:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-06 11:41:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-06 11:41:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-06 11:41:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-06 11:41:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-06 11:41:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-06 11:41:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-06 11:41:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-06 11:41:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-06 11:41:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-06 11:41:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-06 11:41:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-06 11:41:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-06 11:41:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-06 11:41:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-06 11:41:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-06 11:41:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-06 11:41:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-06 11:41:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-06 11:41:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-06 11:41:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-06 11:41:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-06 11:41:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-06 11:41:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-06 11:41:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-06 11:41:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-06 11:41:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-06 11:41:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-06 11:41:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-06 11:41:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-06 11:41:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-06 11:41:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-06 11:41:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-06 11:41:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-06 11:41:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-06 11:41:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-06 11:41:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-06 11:41:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-06 11:41:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-06 11:41:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-06 11:41:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-06 11:41:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-06 11:41:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-06 11:41:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-06 11:41:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-06 11:41:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-06 11:41:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-06 11:41:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-06 11:41:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-06 11:41:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-06 11:41:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-06 11:41:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-06 11:41:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-06 11:41:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-06 11:41:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-06 11:41:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-06 11:41:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-06 11:41:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-06 11:41:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-06 11:41:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-06 11:41:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-06 11:41:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-06 11:41:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-05-06 11:41:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2021-05-06 11:41:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2021-05-06 11:41:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2021-05-06 11:41:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2021-05-06 11:41:35,990 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:35,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607047053] [2021-05-06 11:41:35,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [607047053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:35,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:35,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-06 11:41:35,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688526810] [2021-05-06 11:41:35,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 11:41:35,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 11:41:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=7399, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 11:41:35,991 INFO L87 Difference]: Start difference. First operand 358 states and 442 transitions. Second operand has 88 states, 88 states have (on average 3.0) internal successors, (264), 87 states have internal predecessors, (264), 86 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85)