/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-c225d54 [2021-05-02 23:29:35,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:29:35,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:29:35,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:29:35,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:29:35,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:29:35,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:29:35,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:29:35,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:29:35,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:29:35,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:29:35,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:29:35,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:29:35,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:29:35,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:29:35,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:29:35,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:29:35,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:29:35,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:29:35,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:29:35,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:29:35,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:29:35,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:29:35,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:29:35,585 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:29:35,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:29:35,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:29:35,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:29:35,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:29:35,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:29:35,871 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:29:35,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2021-05-02 23:29:35,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdac3d53/6e6a4d3e5a0b4b29806aedd42b7e1eda/FLAG840c69020 [2021-05-02 23:29:36,327 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:29:36,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_2.i [2021-05-02 23:29:36,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdac3d53/6e6a4d3e5a0b4b29806aedd42b7e1eda/FLAG840c69020 [2021-05-02 23:29:36,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdac3d53/6e6a4d3e5a0b4b29806aedd42b7e1eda [2021-05-02 23:29:36,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:29:36,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:29:36,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:29:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:29:36,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:29:36,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a09946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36, skipping insertion in model container [2021-05-02 23:29:36,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:29:36,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:29:36,463 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] [2021-05-02 23:29:36,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:29:36,476 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:29:36,485 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] [2021-05-02 23:29:36,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:29:36,499 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:29:36,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36 WrapperNode [2021-05-02 23:29:36,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:29:36,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:29:36,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:29:36,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:29:36,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (1/1) ... [2021-05-02 23:29:36,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:29:36,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:29:36,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:29:36,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:29:36,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (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 [2021-05-02 23:29:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:29:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:29:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:29:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:29:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:29:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:29:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:29:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:29:36,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:29:36,824 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 23:29:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:29:36 BoogieIcfgContainer [2021-05-02 23:29:36,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:29:36,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:29:36,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:29:36,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:29:36,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:29:36" (1/3) ... [2021-05-02 23:29:36,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8041faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:29:36, skipping insertion in model container [2021-05-02 23:29:36,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:29:36" (2/3) ... [2021-05-02 23:29:36,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8041faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:29:36, skipping insertion in model container [2021-05-02 23:29:36,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:29:36" (3/3) ... [2021-05-02 23:29:36,838 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2021-05-02 23:29:36,843 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:29:36,845 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:29:36,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:29:36,904 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:29:36,904 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:29:36,904 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:29:36,904 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:29:36,904 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:29:36,905 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:29:36,905 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:29:36,905 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:29:36,921 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) [2021-05-02 23:29:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 23:29:36,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:36,927 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:29:36,927 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1210672905, now seen corresponding path program 1 times [2021-05-02 23:29:36,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:36,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856753739] [2021-05-02 23:29:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:36,993 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:37,188 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:37,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856753739] [2021-05-02 23:29:37,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [856753739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:37,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:37,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:29:37,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542321445] [2021-05-02 23:29:37,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:29:37,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:29:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:29:37,207 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) [2021-05-02 23:29:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:37,339 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-05-02 23:29:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:29:37,341 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 [2021-05-02 23:29:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:37,346 INFO L225 Difference]: With dead ends: 62 [2021-05-02 23:29:37,347 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 23:29:37,350 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:29:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 23:29:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-05-02 23:29:37,389 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) [2021-05-02 23:29:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-05-02 23:29:37,391 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2021-05-02 23:29:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:37,392 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-05-02 23:29:37,392 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) [2021-05-02 23:29:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-05-02 23:29:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 23:29:37,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:37,394 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] [2021-05-02 23:29:37,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:29:37,395 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:37,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:37,397 INFO L82 PathProgramCache]: Analyzing trace with hash 778735204, now seen corresponding path program 1 times [2021-05-02 23:29:37,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:37,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340072858] [2021-05-02 23:29:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:37,424 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:37,429 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:37,596 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:37,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340072858] [2021-05-02 23:29:37,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [340072858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:37,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:37,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:29:37,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070553806] [2021-05-02 23:29:37,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:29:37,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:29:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:29:37,598 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) [2021-05-02 23:29:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:37,728 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-05-02 23:29:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:29:37,728 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 [2021-05-02 23:29:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:37,730 INFO L225 Difference]: With dead ends: 52 [2021-05-02 23:29:37,730 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 23:29:37,731 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:29:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 23:29:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-05-02 23:29:37,745 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) [2021-05-02 23:29:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-05-02 23:29:37,747 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2021-05-02 23:29:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:37,747 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-05-02 23:29:37,747 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) [2021-05-02 23:29:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-05-02 23:29:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 23:29:37,750 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:37,750 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] [2021-05-02 23:29:37,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:29:37,750 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1692936895, now seen corresponding path program 2 times [2021-05-02 23:29:37,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:37,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947243799] [2021-05-02 23:29:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:37,761 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:37,763 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 23:29:37,896 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:37,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947243799] [2021-05-02 23:29:37,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [947243799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:37,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:37,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:29:37,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901290687] [2021-05-02 23:29:37,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:29:37,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:37,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:29:37,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:29:37,898 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) [2021-05-02 23:29:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:38,006 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-05-02 23:29:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:29:38,006 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 [2021-05-02 23:29:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:38,007 INFO L225 Difference]: With dead ends: 60 [2021-05-02 23:29:38,007 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 23:29:38,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:29:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 23:29:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2021-05-02 23:29:38,012 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) [2021-05-02 23:29:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-02 23:29:38,016 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2021-05-02 23:29:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:38,016 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-02 23:29:38,016 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) [2021-05-02 23:29:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-02 23:29:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 23:29:38,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:38,018 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] [2021-05-02 23:29:38,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:29:38,018 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash 912079898, now seen corresponding path program 3 times [2021-05-02 23:29:38,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:38,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013640022] [2021-05-02 23:29:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:38,026 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:38,027 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 23:29:38,159 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:38,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013640022] [2021-05-02 23:29:38,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1013640022] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:38,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:38,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:29:38,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423347746] [2021-05-02 23:29:38,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:29:38,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:29:38,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:29:38,165 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) [2021-05-02 23:29:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:38,342 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-05-02 23:29:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:29:38,343 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 [2021-05-02 23:29:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:38,344 INFO L225 Difference]: With dead ends: 68 [2021-05-02 23:29:38,344 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 23:29:38,344 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:29:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 23:29:38,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2021-05-02 23:29:38,349 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) [2021-05-02 23:29:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-05-02 23:29:38,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2021-05-02 23:29:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:38,350 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-05-02 23:29:38,350 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) [2021-05-02 23:29:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-05-02 23:29:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 23:29:38,351 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:38,351 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] [2021-05-02 23:29:38,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:29:38,351 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash 42254965, now seen corresponding path program 4 times [2021-05-02 23:29:38,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:38,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629653942] [2021-05-02 23:29:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:38,356 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:38,358 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 23:29:38,458 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:38,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629653942] [2021-05-02 23:29:38,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629653942] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:38,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:38,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:29:38,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613118171] [2021-05-02 23:29:38,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:29:38,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:38,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:29:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:29:38,460 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) [2021-05-02 23:29:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:38,645 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-05-02 23:29:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:29:38,646 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 [2021-05-02 23:29:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:38,647 INFO L225 Difference]: With dead ends: 76 [2021-05-02 23:29:38,647 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 23:29:38,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:29:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 23:29:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2021-05-02 23:29:38,653 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) [2021-05-02 23:29:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-05-02 23:29:38,653 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 45 [2021-05-02 23:29:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:38,654 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-05-02 23:29:38,654 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) [2021-05-02 23:29:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-05-02 23:29:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 23:29:38,654 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:38,655 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] [2021-05-02 23:29:38,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 23:29:38,655 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1041874384, now seen corresponding path program 5 times [2021-05-02 23:29:38,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:38,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160069465] [2021-05-02 23:29:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:38,660 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:38,661 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 23:29:38,792 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:38,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160069465] [2021-05-02 23:29:38,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [160069465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:38,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:38,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 23:29:38,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212107696] [2021-05-02 23:29:38,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 23:29:38,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:38,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 23:29:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:29:38,795 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) [2021-05-02 23:29:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:39,122 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-05-02 23:29:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:29:39,122 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 [2021-05-02 23:29:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:39,123 INFO L225 Difference]: With dead ends: 84 [2021-05-02 23:29:39,123 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 23:29:39,124 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:29:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 23:29:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2021-05-02 23:29:39,128 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) [2021-05-02 23:29:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-05-02 23:29:39,129 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 53 [2021-05-02 23:29:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:39,129 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-05-02 23:29:39,130 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) [2021-05-02 23:29:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-05-02 23:29:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 23:29:39,130 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:39,130 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] [2021-05-02 23:29:39,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-02 23:29:39,131 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1926704683, now seen corresponding path program 6 times [2021-05-02 23:29:39,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:39,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104950615] [2021-05-02 23:29:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:39,137 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:39,138 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 23:29:39,317 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:39,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104950615] [2021-05-02 23:29:39,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1104950615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:39,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:39,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:29:39,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746424161] [2021-05-02 23:29:39,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:29:39,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:29:39,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:29:39,319 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) [2021-05-02 23:29:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:39,623 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2021-05-02 23:29:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:29:39,623 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 [2021-05-02 23:29:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:39,625 INFO L225 Difference]: With dead ends: 92 [2021-05-02 23:29:39,625 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 23:29:39,626 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:29:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 23:29:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 50. [2021-05-02 23:29:39,638 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) [2021-05-02 23:29:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-05-02 23:29:39,639 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 61 [2021-05-02 23:29:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:39,639 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-05-02 23:29:39,639 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) [2021-05-02 23:29:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-05-02 23:29:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 23:29:39,640 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:39,640 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] [2021-05-02 23:29:39,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 23:29:39,640 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:39,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1064833926, now seen corresponding path program 7 times [2021-05-02 23:29:39,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:39,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608699920] [2021-05-02 23:29:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:39,649 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:39,651 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 23:29:39,821 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:39,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608699920] [2021-05-02 23:29:39,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [608699920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:39,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:39,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 23:29:39,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639475885] [2021-05-02 23:29:39,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 23:29:39,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:39,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 23:29:39,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:29:39,825 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) [2021-05-02 23:29:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:40,103 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-05-02 23:29:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 23:29:40,104 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 [2021-05-02 23:29:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:40,106 INFO L225 Difference]: With dead ends: 100 [2021-05-02 23:29:40,106 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 23:29:40,107 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:29:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 23:29:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2021-05-02 23:29:40,122 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) [2021-05-02 23:29:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-05-02 23:29:40,126 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 69 [2021-05-02 23:29:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:40,127 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-05-02 23:29:40,127 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) [2021-05-02 23:29:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-05-02 23:29:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 23:29:40,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:40,131 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] [2021-05-02 23:29:40,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:29:40,131 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1471639009, now seen corresponding path program 8 times [2021-05-02 23:29:40,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:40,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920307205] [2021-05-02 23:29:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:40,139 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:40,140 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-02 23:29:40,346 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:40,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920307205] [2021-05-02 23:29:40,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1920307205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:40,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:40,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 23:29:40,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010840561] [2021-05-02 23:29:40,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 23:29:40,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:40,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 23:29:40,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 23:29:40,351 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) [2021-05-02 23:29:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:40,705 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2021-05-02 23:29:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 23:29:40,705 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 [2021-05-02 23:29:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:40,706 INFO L225 Difference]: With dead ends: 108 [2021-05-02 23:29:40,706 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 23:29:40,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 23:29:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 23:29:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2021-05-02 23:29:40,711 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) [2021-05-02 23:29:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-05-02 23:29:40,712 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 77 [2021-05-02 23:29:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:40,712 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-05-02 23:29:40,712 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) [2021-05-02 23:29:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-05-02 23:29:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 23:29:40,713 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:40,713 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] [2021-05-02 23:29:40,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-02 23:29:40,713 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:40,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2075116228, now seen corresponding path program 9 times [2021-05-02 23:29:40,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:40,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583135722] [2021-05-02 23:29:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:40,725 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:40,727 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 23:29:40,893 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:40,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583135722] [2021-05-02 23:29:40,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [583135722] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:40,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:40,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 23:29:40,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208407815] [2021-05-02 23:29:40,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 23:29:40,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 23:29:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:29:40,895 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) [2021-05-02 23:29:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:41,331 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2021-05-02 23:29:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 23:29:41,331 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 [2021-05-02 23:29:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:41,332 INFO L225 Difference]: With dead ends: 116 [2021-05-02 23:29:41,332 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 23:29:41,333 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:29:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 23:29:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2021-05-02 23:29:41,338 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) [2021-05-02 23:29:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-05-02 23:29:41,338 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 85 [2021-05-02 23:29:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:41,339 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-05-02 23:29:41,339 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) [2021-05-02 23:29:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-05-02 23:29:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 23:29:41,339 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:41,340 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] [2021-05-02 23:29:41,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-02 23:29:41,340 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:41,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1560444521, now seen corresponding path program 10 times [2021-05-02 23:29:41,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:41,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232723818] [2021-05-02 23:29:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:41,345 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:41,346 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 23:29:41,521 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:41,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232723818] [2021-05-02 23:29:41,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1232723818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:41,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:41,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-02 23:29:41,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518474155] [2021-05-02 23:29:41,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 23:29:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 23:29:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 23:29:41,523 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) [2021-05-02 23:29:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:41,977 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2021-05-02 23:29:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 23:29:41,977 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 [2021-05-02 23:29:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:41,978 INFO L225 Difference]: With dead ends: 124 [2021-05-02 23:29:41,978 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 23:29:41,979 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 23:29:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 23:29:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 66. [2021-05-02 23:29:41,984 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) [2021-05-02 23:29:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2021-05-02 23:29:41,985 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 93 [2021-05-02 23:29:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:41,985 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2021-05-02 23:29:41,985 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) [2021-05-02 23:29:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2021-05-02 23:29:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 23:29:41,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:41,986 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] [2021-05-02 23:29:41,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-02 23:29:41,986 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:41,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1501938958, now seen corresponding path program 11 times [2021-05-02 23:29:41,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:41,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046781217] [2021-05-02 23:29:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:41,992 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:41,993 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-05-02 23:29:42,180 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:42,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046781217] [2021-05-02 23:29:42,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1046781217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:42,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:42,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-02 23:29:42,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939254071] [2021-05-02 23:29:42,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 23:29:42,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 23:29:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:29:42,182 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) [2021-05-02 23:29:42,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:42,774 INFO L93 Difference]: Finished difference Result 132 states and 158 transitions. [2021-05-02 23:29:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 23:29:42,775 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 [2021-05-02 23:29:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:42,776 INFO L225 Difference]: With dead ends: 132 [2021-05-02 23:29:42,776 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 23:29:42,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:29:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 23:29:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 70. [2021-05-02 23:29:42,781 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) [2021-05-02 23:29:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-05-02 23:29:42,782 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 101 [2021-05-02 23:29:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:42,782 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-05-02 23:29:42,782 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) [2021-05-02 23:29:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-05-02 23:29:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 23:29:42,783 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:42,783 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] [2021-05-02 23:29:42,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-02 23:29:42,783 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1769903795, now seen corresponding path program 12 times [2021-05-02 23:29:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:42,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464164893] [2021-05-02 23:29:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:42,788 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:42,789 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-05-02 23:29:43,012 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:43,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464164893] [2021-05-02 23:29:43,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [464164893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:43,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:43,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-02 23:29:43,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467013361] [2021-05-02 23:29:43,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 23:29:43,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 23:29:43,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-02 23:29:43,014 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) [2021-05-02 23:29:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:43,618 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2021-05-02 23:29:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 23:29:43,618 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 [2021-05-02 23:29:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:43,619 INFO L225 Difference]: With dead ends: 140 [2021-05-02 23:29:43,619 INFO L226 Difference]: Without dead ends: 129 [2021-05-02 23:29:43,620 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-02 23:29:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-02 23:29:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 74. [2021-05-02 23:29:43,624 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) [2021-05-02 23:29:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-05-02 23:29:43,625 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 109 [2021-05-02 23:29:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:43,625 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-05-02 23:29:43,625 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) [2021-05-02 23:29:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-05-02 23:29:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 23:29:43,626 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:43,626 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] [2021-05-02 23:29:43,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-02 23:29:43,626 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:43,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1882321752, now seen corresponding path program 13 times [2021-05-02 23:29:43,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:43,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014359960] [2021-05-02 23:29:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:43,631 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:43,632 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-05-02 23:29:43,877 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:43,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014359960] [2021-05-02 23:29:43,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1014359960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:43,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:43,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-02 23:29:43,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396343066] [2021-05-02 23:29:43,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 23:29:43,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:43,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 23:29:43,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:29:43,878 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) [2021-05-02 23:29:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:44,650 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2021-05-02 23:29:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 23:29:44,650 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 [2021-05-02 23:29:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:44,651 INFO L225 Difference]: With dead ends: 148 [2021-05-02 23:29:44,651 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 23:29:44,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 158.2ms TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:29:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 23:29:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 78. [2021-05-02 23:29:44,657 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) [2021-05-02 23:29:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-05-02 23:29:44,658 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 117 [2021-05-02 23:29:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:44,659 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-05-02 23:29:44,659 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) [2021-05-02 23:29:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-05-02 23:29:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 23:29:44,660 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:44,660 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] [2021-05-02 23:29:44,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-02 23:29:44,661 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1004854013, now seen corresponding path program 14 times [2021-05-02 23:29:44,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:44,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385068047] [2021-05-02 23:29:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:44,669 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:44,670 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-05-02 23:29:44,935 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:44,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385068047] [2021-05-02 23:29:44,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [385068047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:44,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:44,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-02 23:29:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224857487] [2021-05-02 23:29:44,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 23:29:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 23:29:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-05-02 23:29:44,937 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) [2021-05-02 23:29:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:45,748 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2021-05-02 23:29:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 23:29:45,748 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 [2021-05-02 23:29:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:45,749 INFO L225 Difference]: With dead ends: 156 [2021-05-02 23:29:45,749 INFO L226 Difference]: Without dead ends: 145 [2021-05-02 23:29:45,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 154.5ms TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-05-02 23:29:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-02 23:29:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2021-05-02 23:29:45,755 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) [2021-05-02 23:29:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2021-05-02 23:29:45,755 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 125 [2021-05-02 23:29:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:45,756 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2021-05-02 23:29:45,756 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) [2021-05-02 23:29:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2021-05-02 23:29:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 23:29:45,757 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:45,757 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] [2021-05-02 23:29:45,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-02 23:29:45,757 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:45,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2049159774, now seen corresponding path program 15 times [2021-05-02 23:29:45,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:45,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899383936] [2021-05-02 23:29:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:45,766 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:45,767 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-02 23:29:46,014 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:46,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899383936] [2021-05-02 23:29:46,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [899383936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:46,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:46,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-02 23:29:46,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153912130] [2021-05-02 23:29:46,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 23:29:46,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 23:29:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-02 23:29:46,015 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) [2021-05-02 23:29:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:46,909 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2021-05-02 23:29:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 23:29:46,910 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 [2021-05-02 23:29:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:46,911 INFO L225 Difference]: With dead ends: 164 [2021-05-02 23:29:46,911 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 23:29:46,911 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 169.0ms TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-05-02 23:29:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 23:29:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2021-05-02 23:29:46,916 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) [2021-05-02 23:29:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2021-05-02 23:29:46,917 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 133 [2021-05-02 23:29:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:46,917 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2021-05-02 23:29:46,917 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) [2021-05-02 23:29:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2021-05-02 23:29:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 23:29:46,918 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:46,918 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] [2021-05-02 23:29:46,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-02 23:29:46,918 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:46,919 INFO L82 PathProgramCache]: Analyzing trace with hash 228766905, now seen corresponding path program 16 times [2021-05-02 23:29:46,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:46,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233230648] [2021-05-02 23:29:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:46,925 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:46,925 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-05-02 23:29:47,397 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:47,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233230648] [2021-05-02 23:29:47,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [233230648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:47,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:47,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-02 23:29:47,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893842506] [2021-05-02 23:29:47,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 23:29:47,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:47,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 23:29:47,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-05-02 23:29:47,399 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) [2021-05-02 23:29:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:48,378 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2021-05-02 23:29:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 23:29:48,378 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 [2021-05-02 23:29:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:48,379 INFO L225 Difference]: With dead ends: 172 [2021-05-02 23:29:48,379 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 23:29:48,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 248.9ms TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-05-02 23:29:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 23:29:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 90. [2021-05-02 23:29:48,384 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) [2021-05-02 23:29:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2021-05-02 23:29:48,385 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 141 [2021-05-02 23:29:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:48,385 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2021-05-02 23:29:48,385 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) [2021-05-02 23:29:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2021-05-02 23:29:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 23:29:48,386 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:48,386 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] [2021-05-02 23:29:48,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-02 23:29:48,387 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash -279761900, now seen corresponding path program 17 times [2021-05-02 23:29:48,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:48,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278738073] [2021-05-02 23:29:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:48,392 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:48,393 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-05-02 23:29:48,710 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:48,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278738073] [2021-05-02 23:29:48,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [278738073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:48,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:48,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-02 23:29:48,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338619865] [2021-05-02 23:29:48,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 23:29:48,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 23:29:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:29:48,711 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) [2021-05-02 23:29:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:49,812 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2021-05-02 23:29:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 23:29:49,813 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 [2021-05-02 23:29:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:49,814 INFO L225 Difference]: With dead ends: 180 [2021-05-02 23:29:49,814 INFO L226 Difference]: Without dead ends: 169 [2021-05-02 23:29:49,815 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 213.1ms TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:29:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-02 23:29:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 94. [2021-05-02 23:29:49,820 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) [2021-05-02 23:29:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-05-02 23:29:49,821 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 149 [2021-05-02 23:29:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:49,821 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-05-02 23:29:49,821 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) [2021-05-02 23:29:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-05-02 23:29:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 23:29:49,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:49,822 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] [2021-05-02 23:29:49,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-02 23:29:49,822 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1527768977, now seen corresponding path program 18 times [2021-05-02 23:29:49,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:49,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674455126] [2021-05-02 23:29:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:49,829 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:49,830 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-05-02 23:29:50,162 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:50,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674455126] [2021-05-02 23:29:50,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1674455126] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:50,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:50,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-02 23:29:50,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966244065] [2021-05-02 23:29:50,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 23:29:50,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:50,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 23:29:50,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-02 23:29:50,163 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) [2021-05-02 23:29:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:51,448 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2021-05-02 23:29:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 23:29:51,449 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 [2021-05-02 23:29:51,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:51,450 INFO L225 Difference]: With dead ends: 188 [2021-05-02 23:29:51,450 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 23:29:51,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 225.3ms TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-02 23:29:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 23:29:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 98. [2021-05-02 23:29:51,458 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) [2021-05-02 23:29:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2021-05-02 23:29:51,459 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 157 [2021-05-02 23:29:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:51,459 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2021-05-02 23:29:51,459 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) [2021-05-02 23:29:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2021-05-02 23:29:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 23:29:51,460 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:51,460 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] [2021-05-02 23:29:51,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-02 23:29:51,461 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash -919307830, now seen corresponding path program 19 times [2021-05-02 23:29:51,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:51,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602696408] [2021-05-02 23:29:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:51,467 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:51,468 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:29:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-05-02 23:29:51,857 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:51,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602696408] [2021-05-02 23:29:51,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1602696408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:51,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:51,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-02 23:29:51,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309735840] [2021-05-02 23:29:51,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 23:29:51,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:51,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 23:29:51,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:29:51,859 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) [2021-05-02 23:29:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:53,184 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2021-05-02 23:29:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 23:29:53,185 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 [2021-05-02 23:29:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:53,187 INFO L225 Difference]: With dead ends: 196 [2021-05-02 23:29:53,187 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 23:29:53,187 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 243.2ms TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:29:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 23:29:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 102. [2021-05-02 23:29:53,193 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) [2021-05-02 23:29:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2021-05-02 23:29:53,195 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 165 [2021-05-02 23:29:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:53,195 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2021-05-02 23:29:53,195 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) [2021-05-02 23:29:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2021-05-02 23:29:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 23:29:53,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:53,196 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] [2021-05-02 23:29:53,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-02 23:29:53,197 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 198922277, now seen corresponding path program 20 times [2021-05-02 23:29:53,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:53,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903250171] [2021-05-02 23:29:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:53,202 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:53,203 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:29:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:29:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-05-02 23:29:53,610 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:53,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903250171] [2021-05-02 23:29:53,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [903250171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:53,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:53,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-02 23:29:53,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756114978] [2021-05-02 23:29:53,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 23:29:53,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 23:29:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-05-02 23:29:53,611 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) [2021-05-02 23:29:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:54,990 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2021-05-02 23:29:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 23:29:54,990 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 [2021-05-02 23:29:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:54,991 INFO L225 Difference]: With dead ends: 204 [2021-05-02 23:29:54,991 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 23:29:54,992 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 271.4ms TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-05-02 23:29:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 23:29:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 106. [2021-05-02 23:29:54,996 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) [2021-05-02 23:29:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-05-02 23:29:54,997 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 173 [2021-05-02 23:29:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:54,997 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-05-02 23:29:54,997 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) [2021-05-02 23:29:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-05-02 23:29:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 23:29:54,998 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:54,998 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] [2021-05-02 23:29:54,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-02 23:29:54,998 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash 832543616, now seen corresponding path program 21 times [2021-05-02 23:29:54,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:54,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919022868] [2021-05-02 23:29:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:55,005 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:55,006 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:29:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:29:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:29:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2021-05-02 23:29:55,376 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:55,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919022868] [2021-05-02 23:29:55,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1919022868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:55,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:55,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-02 23:29:55,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103578200] [2021-05-02 23:29:55,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 23:29:55,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 23:29:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-05-02 23:29:55,377 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) [2021-05-02 23:29:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:56,889 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2021-05-02 23:29:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 23:29:56,891 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 [2021-05-02 23:29:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:56,892 INFO L225 Difference]: With dead ends: 212 [2021-05-02 23:29:56,892 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 23:29:56,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 262.2ms TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-05-02 23:29:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 23:29:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 110. [2021-05-02 23:29:56,898 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) [2021-05-02 23:29:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2021-05-02 23:29:56,899 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 181 [2021-05-02 23:29:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:56,899 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2021-05-02 23:29:56,899 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) [2021-05-02 23:29:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2021-05-02 23:29:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 23:29:56,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:56,900 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] [2021-05-02 23:29:56,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-02 23:29:56,900 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash 339499995, now seen corresponding path program 22 times [2021-05-02 23:29:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:56,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472879958] [2021-05-02 23:29:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:56,907 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:56,908 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:29:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:29:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:29:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:29:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-05-02 23:29:57,350 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:57,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472879958] [2021-05-02 23:29:57,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1472879958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:57,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:57,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-02 23:29:57,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850148061] [2021-05-02 23:29:57,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 23:29:57,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 23:29:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-02 23:29:57,351 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) [2021-05-02 23:29:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:58,976 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2021-05-02 23:29:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 23:29:58,977 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 [2021-05-02 23:29:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:58,978 INFO L225 Difference]: With dead ends: 220 [2021-05-02 23:29:58,978 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 23:29:58,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-02 23:29:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 23:29:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 114. [2021-05-02 23:29:58,983 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) [2021-05-02 23:29:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-05-02 23:29:58,984 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 189 [2021-05-02 23:29:58,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:58,984 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-05-02 23:29:58,984 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) [2021-05-02 23:29:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-05-02 23:29:58,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 23:29:58,985 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:29:58,985 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] [2021-05-02 23:29:58,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-02 23:29:58,985 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:29:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:29:58,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1569943242, now seen corresponding path program 23 times [2021-05-02 23:29:58,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:29:58,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244035459] [2021-05-02 23:29:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:29:58,994 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:29:58,995 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:29:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:29:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:29:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:29:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:29:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:29:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:29:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:29:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:29:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:29:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:29:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:29:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:29:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:29:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:29:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:29:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:29:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:29:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:29:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:29:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:29:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:29:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:29:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:29:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-05-02 23:29:59,413 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:59,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244035459] [2021-05-02 23:29:59,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244035459] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:59,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:59,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-02 23:29:59,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338528870] [2021-05-02 23:29:59,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 23:29:59,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:59,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 23:29:59,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:29:59,415 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) [2021-05-02 23:30:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:01,255 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2021-05-02 23:30:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 23:30:01,255 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 [2021-05-02 23:30:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:01,256 INFO L225 Difference]: With dead ends: 228 [2021-05-02 23:30:01,256 INFO L226 Difference]: Without dead ends: 217 [2021-05-02 23:30:01,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 310.5ms TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:30:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-02 23:30:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 118. [2021-05-02 23:30:01,262 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) [2021-05-02 23:30:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2021-05-02 23:30:01,263 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 197 [2021-05-02 23:30:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:01,263 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2021-05-02 23:30:01,263 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) [2021-05-02 23:30:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2021-05-02 23:30:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 23:30:01,264 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:01,264 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] [2021-05-02 23:30:01,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-02 23:30:01,264 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash -538231919, now seen corresponding path program 24 times [2021-05-02 23:30:01,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:01,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082426143] [2021-05-02 23:30:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:01,270 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:01,271 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-05-02 23:30:01,765 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:01,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082426143] [2021-05-02 23:30:01,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1082426143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:01,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:01,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-02 23:30:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690434479] [2021-05-02 23:30:01,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 23:30:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 23:30:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-05-02 23:30:01,768 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) [2021-05-02 23:30:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:03,804 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2021-05-02 23:30:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 23:30:03,805 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 [2021-05-02 23:30:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:03,806 INFO L225 Difference]: With dead ends: 236 [2021-05-02 23:30:03,806 INFO L226 Difference]: Without dead ends: 225 [2021-05-02 23:30:03,806 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 375.4ms TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-05-02 23:30:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-02 23:30:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 122. [2021-05-02 23:30:03,811 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) [2021-05-02 23:30:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2021-05-02 23:30:03,812 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 205 [2021-05-02 23:30:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:03,813 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2021-05-02 23:30:03,813 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) [2021-05-02 23:30:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2021-05-02 23:30:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 23:30:03,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:03,814 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] [2021-05-02 23:30:03,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-02 23:30:03,814 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:03,814 INFO L82 PathProgramCache]: Analyzing trace with hash -445424916, now seen corresponding path program 25 times [2021-05-02 23:30:03,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:03,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911180264] [2021-05-02 23:30:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:03,824 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:03,826 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-05-02 23:30:04,568 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:04,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911180264] [2021-05-02 23:30:04,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [911180264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:04,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:04,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-02 23:30:04,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83759426] [2021-05-02 23:30:04,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 23:30:04,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:04,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 23:30:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-05-02 23:30:04,570 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) [2021-05-02 23:30:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:06,809 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2021-05-02 23:30:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 23:30:06,810 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 [2021-05-02 23:30:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:06,822 INFO L225 Difference]: With dead ends: 244 [2021-05-02 23:30:06,822 INFO L226 Difference]: Without dead ends: 233 [2021-05-02 23:30:06,822 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 594.5ms TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-05-02 23:30:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-02 23:30:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 126. [2021-05-02 23:30:06,827 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) [2021-05-02 23:30:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-05-02 23:30:06,832 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 213 [2021-05-02 23:30:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:06,833 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-05-02 23:30:06,833 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) [2021-05-02 23:30:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-05-02 23:30:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 23:30:06,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:06,834 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] [2021-05-02 23:30:06,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-02 23:30:06,834 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -524292281, now seen corresponding path program 26 times [2021-05-02 23:30:06,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:06,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019343397] [2021-05-02 23:30:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:06,850 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:06,850 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-05-02 23:30:07,552 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:07,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019343397] [2021-05-02 23:30:07,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019343397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:07,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:07,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-02 23:30:07,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751271095] [2021-05-02 23:30:07,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 23:30:07,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 23:30:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-05-02 23:30:07,555 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) [2021-05-02 23:30:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:09,887 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2021-05-02 23:30:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 23:30:09,887 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 [2021-05-02 23:30:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:09,889 INFO L225 Difference]: With dead ends: 252 [2021-05-02 23:30:09,889 INFO L226 Difference]: Without dead ends: 241 [2021-05-02 23:30:09,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 513.6ms TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-05-02 23:30:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-05-02 23:30:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 130. [2021-05-02 23:30:09,895 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) [2021-05-02 23:30:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2021-05-02 23:30:09,896 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 221 [2021-05-02 23:30:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:09,896 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-05-02 23:30:09,896 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) [2021-05-02 23:30:09,896 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2021-05-02 23:30:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 23:30:09,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:09,897 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] [2021-05-02 23:30:09,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-02 23:30:09,898 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash 344717474, now seen corresponding path program 27 times [2021-05-02 23:30:09,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:09,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440813852] [2021-05-02 23:30:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:09,906 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:09,906 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2021-05-02 23:30:10,440 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:10,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440813852] [2021-05-02 23:30:10,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [440813852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:10,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:10,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-02 23:30:10,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088294461] [2021-05-02 23:30:10,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 23:30:10,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:10,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 23:30:10,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2021-05-02 23:30:10,442 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) [2021-05-02 23:30:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:12,958 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2021-05-02 23:30:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 23:30:12,958 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 [2021-05-02 23:30:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:12,960 INFO L225 Difference]: With dead ends: 260 [2021-05-02 23:30:12,960 INFO L226 Difference]: Without dead ends: 249 [2021-05-02 23:30:12,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 415.0ms TimeCoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2021-05-02 23:30:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-05-02 23:30:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 134. [2021-05-02 23:30:12,966 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) [2021-05-02 23:30:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2021-05-02 23:30:12,966 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 229 [2021-05-02 23:30:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:12,967 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2021-05-02 23:30:12,967 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) [2021-05-02 23:30:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2021-05-02 23:30:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 23:30:12,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:12,968 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] [2021-05-02 23:30:12,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-02 23:30:12,968 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:12,968 INFO L82 PathProgramCache]: Analyzing trace with hash -661489923, now seen corresponding path program 28 times [2021-05-02 23:30:12,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:12,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852516853] [2021-05-02 23:30:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:12,973 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:12,974 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-05-02 23:30:13,582 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:13,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852516853] [2021-05-02 23:30:13,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852516853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:13,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:13,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-02 23:30:13,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902015123] [2021-05-02 23:30:13,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 23:30:13,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 23:30:13,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-05-02 23:30:13,584 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) [2021-05-02 23:30:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:16,258 INFO L93 Difference]: Finished difference Result 268 states and 328 transitions. [2021-05-02 23:30:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 23:30:16,258 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 [2021-05-02 23:30:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:16,260 INFO L225 Difference]: With dead ends: 268 [2021-05-02 23:30:16,260 INFO L226 Difference]: Without dead ends: 257 [2021-05-02 23:30:16,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 479.5ms TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-05-02 23:30:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-02 23:30:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 138. [2021-05-02 23:30:16,267 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) [2021-05-02 23:30:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2021-05-02 23:30:16,267 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 237 [2021-05-02 23:30:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:16,268 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2021-05-02 23:30:16,268 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) [2021-05-02 23:30:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2021-05-02 23:30:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 23:30:16,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:16,269 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] [2021-05-02 23:30:16,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-02 23:30:16,269 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1718719912, now seen corresponding path program 29 times [2021-05-02 23:30:16,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:16,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792563220] [2021-05-02 23:30:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:16,283 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:16,284 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2021-05-02 23:30:16,887 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792563220] [2021-05-02 23:30:16,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1792563220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:16,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:16,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-02 23:30:16,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4002451] [2021-05-02 23:30:16,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 23:30:16,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 23:30:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 23:30:16,889 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) [2021-05-02 23:30:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:19,645 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2021-05-02 23:30:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 23:30:19,645 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 [2021-05-02 23:30:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:19,647 INFO L225 Difference]: With dead ends: 276 [2021-05-02 23:30:19,647 INFO L226 Difference]: Without dead ends: 265 [2021-05-02 23:30:19,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 463.0ms TimeCoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 23:30:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-05-02 23:30:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 142. [2021-05-02 23:30:19,653 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) [2021-05-02 23:30:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2021-05-02 23:30:19,654 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 245 [2021-05-02 23:30:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:19,654 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2021-05-02 23:30:19,655 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) [2021-05-02 23:30:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2021-05-02 23:30:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 23:30:19,656 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:19,656 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] [2021-05-02 23:30:19,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-02 23:30:19,656 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -650456397, now seen corresponding path program 30 times [2021-05-02 23:30:19,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:19,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095104549] [2021-05-02 23:30:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:19,661 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:19,664 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2021-05-02 23:30:20,347 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:20,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095104549] [2021-05-02 23:30:20,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2095104549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:20,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:20,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-02 23:30:20,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156620616] [2021-05-02 23:30:20,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 23:30:20,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:20,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 23:30:20,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 23:30:20,349 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) [2021-05-02 23:30:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:23,375 INFO L93 Difference]: Finished difference Result 284 states and 348 transitions. [2021-05-02 23:30:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 23:30:23,375 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 [2021-05-02 23:30:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:23,379 INFO L225 Difference]: With dead ends: 284 [2021-05-02 23:30:23,379 INFO L226 Difference]: Without dead ends: 273 [2021-05-02 23:30:23,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 494.6ms TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 23:30:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-05-02 23:30:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 146. [2021-05-02 23:30:23,405 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) [2021-05-02 23:30:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2021-05-02 23:30:23,406 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 253 [2021-05-02 23:30:23,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:23,407 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2021-05-02 23:30:23,407 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) [2021-05-02 23:30:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2021-05-02 23:30:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 23:30:23,408 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:23,408 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] [2021-05-02 23:30:23,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-02 23:30:23,415 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 777170958, now seen corresponding path program 31 times [2021-05-02 23:30:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:23,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373534301] [2021-05-02 23:30:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:23,420 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:23,422 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2021-05-02 23:30:24,093 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:24,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373534301] [2021-05-02 23:30:24,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1373534301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:24,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:24,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-02 23:30:24,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079409231] [2021-05-02 23:30:24,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 23:30:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 23:30:24,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 23:30:24,095 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) [2021-05-02 23:30:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:27,223 INFO L93 Difference]: Finished difference Result 292 states and 358 transitions. [2021-05-02 23:30:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 23:30:27,225 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 [2021-05-02 23:30:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:27,226 INFO L225 Difference]: With dead ends: 292 [2021-05-02 23:30:27,226 INFO L226 Difference]: Without dead ends: 281 [2021-05-02 23:30:27,227 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 529.5ms TimeCoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 23:30:27,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-02 23:30:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 150. [2021-05-02 23:30:27,232 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) [2021-05-02 23:30:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2021-05-02 23:30:27,233 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 261 [2021-05-02 23:30:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:27,233 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2021-05-02 23:30:27,234 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) [2021-05-02 23:30:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2021-05-02 23:30:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 23:30:27,234 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:27,235 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] [2021-05-02 23:30:27,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-02 23:30:27,235 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:27,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1150354025, now seen corresponding path program 32 times [2021-05-02 23:30:27,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:27,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266120035] [2021-05-02 23:30:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:27,240 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:27,241 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2021-05-02 23:30:27,960 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:27,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266120035] [2021-05-02 23:30:27,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [266120035] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:27,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:27,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-02 23:30:27,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919180650] [2021-05-02 23:30:27,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 23:30:27,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:27,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 23:30:27,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 23:30:27,962 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) [2021-05-02 23:30:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:31,175 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2021-05-02 23:30:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 23:30:31,175 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 [2021-05-02 23:30:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:31,177 INFO L225 Difference]: With dead ends: 300 [2021-05-02 23:30:31,177 INFO L226 Difference]: Without dead ends: 289 [2021-05-02 23:30:31,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 569.1ms TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 23:30:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-05-02 23:30:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 154. [2021-05-02 23:30:31,182 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) [2021-05-02 23:30:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 187 transitions. [2021-05-02 23:30:31,183 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 187 transitions. Word has length 269 [2021-05-02 23:30:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:31,183 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 187 transitions. [2021-05-02 23:30:31,183 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) [2021-05-02 23:30:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 187 transitions. [2021-05-02 23:30:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 23:30:31,184 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:31,184 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] [2021-05-02 23:30:31,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-02 23:30:31,185 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash -592393788, now seen corresponding path program 33 times [2021-05-02 23:30:31,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:31,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418147005] [2021-05-02 23:30:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:31,192 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:31,193 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2021-05-02 23:30:32,010 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:32,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418147005] [2021-05-02 23:30:32,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [418147005] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:32,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:32,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-02 23:30:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61372343] [2021-05-02 23:30:32,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 23:30:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:32,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 23:30:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:30:32,012 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) [2021-05-02 23:30:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:35,666 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2021-05-02 23:30:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 23:30:35,667 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 [2021-05-02 23:30:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:35,668 INFO L225 Difference]: With dead ends: 308 [2021-05-02 23:30:35,668 INFO L226 Difference]: Without dead ends: 297 [2021-05-02 23:30:35,669 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 659.4ms TimeCoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:30:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-05-02 23:30:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 158. [2021-05-02 23:30:35,674 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) [2021-05-02 23:30:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 192 transitions. [2021-05-02 23:30:35,675 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 192 transitions. Word has length 277 [2021-05-02 23:30:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:35,675 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 192 transitions. [2021-05-02 23:30:35,675 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) [2021-05-02 23:30:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 192 transitions. [2021-05-02 23:30:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 23:30:35,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:35,677 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] [2021-05-02 23:30:35,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-02 23:30:35,677 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash -865270241, now seen corresponding path program 34 times [2021-05-02 23:30:35,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:35,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753570618] [2021-05-02 23:30:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:35,687 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:35,688 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:30:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2021-05-02 23:30:36,458 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:36,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753570618] [2021-05-02 23:30:36,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [753570618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:36,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:36,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-02 23:30:36,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24113459] [2021-05-02 23:30:36,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 23:30:36,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 23:30:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 23:30:36,460 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) [2021-05-02 23:30:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:40,226 INFO L93 Difference]: Finished difference Result 316 states and 388 transitions. [2021-05-02 23:30:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 23:30:40,227 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 [2021-05-02 23:30:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:40,229 INFO L225 Difference]: With dead ends: 316 [2021-05-02 23:30:40,229 INFO L226 Difference]: Without dead ends: 305 [2021-05-02 23:30:40,229 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 638.2ms TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 23:30:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-05-02 23:30:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 162. [2021-05-02 23:30:40,235 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) [2021-05-02 23:30:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2021-05-02 23:30:40,236 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 285 [2021-05-02 23:30:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:40,236 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2021-05-02 23:30:40,236 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) [2021-05-02 23:30:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2021-05-02 23:30:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 23:30:40,237 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:40,237 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] [2021-05-02 23:30:40,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-02 23:30:40,237 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash -25118854, now seen corresponding path program 35 times [2021-05-02 23:30:40,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:40,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74618737] [2021-05-02 23:30:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:40,243 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:40,244 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:30:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:30:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2021-05-02 23:30:41,107 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:41,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74618737] [2021-05-02 23:30:41,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [74618737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:41,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:41,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-02 23:30:41,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282497848] [2021-05-02 23:30:41,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 23:30:41,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 23:30:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:30:41,109 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) [2021-05-02 23:30:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:45,162 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2021-05-02 23:30:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 23:30:45,163 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 [2021-05-02 23:30:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:45,164 INFO L225 Difference]: With dead ends: 324 [2021-05-02 23:30:45,164 INFO L226 Difference]: Without dead ends: 313 [2021-05-02 23:30:45,165 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 684.8ms TimeCoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:30:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-05-02 23:30:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 166. [2021-05-02 23:30:45,170 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) [2021-05-02 23:30:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2021-05-02 23:30:45,171 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 293 [2021-05-02 23:30:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:45,171 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2021-05-02 23:30:45,172 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) [2021-05-02 23:30:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2021-05-02 23:30:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-05-02 23:30:45,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:45,173 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] [2021-05-02 23:30:45,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-02 23:30:45,173 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1923538389, now seen corresponding path program 36 times [2021-05-02 23:30:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:45,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505736685] [2021-05-02 23:30:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:45,179 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:45,179 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:30:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:30:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:30:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2021-05-02 23:30:46,022 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:46,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505736685] [2021-05-02 23:30:46,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [505736685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:46,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:46,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-02 23:30:46,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48833027] [2021-05-02 23:30:46,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 23:30:46,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 23:30:46,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 23:30:46,024 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) [2021-05-02 23:30:50,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:50,193 INFO L93 Difference]: Finished difference Result 332 states and 408 transitions. [2021-05-02 23:30:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 23:30:50,194 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 [2021-05-02 23:30:50,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:50,196 INFO L225 Difference]: With dead ends: 332 [2021-05-02 23:30:50,196 INFO L226 Difference]: Without dead ends: 321 [2021-05-02 23:30:50,196 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 705.5ms TimeCoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 23:30:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-05-02 23:30:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 170. [2021-05-02 23:30:50,203 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) [2021-05-02 23:30:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2021-05-02 23:30:50,204 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 301 [2021-05-02 23:30:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:50,204 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2021-05-02 23:30:50,204 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) [2021-05-02 23:30:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2021-05-02 23:30:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-05-02 23:30:50,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:50,205 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] [2021-05-02 23:30:50,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-02 23:30:50,206 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1033533744, now seen corresponding path program 37 times [2021-05-02 23:30:50,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:50,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642647604] [2021-05-02 23:30:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:50,212 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:50,213 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:30:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:30:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:30:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:30:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2021-05-02 23:30:51,170 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:51,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642647604] [2021-05-02 23:30:51,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1642647604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:51,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:51,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-02 23:30:51,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785636895] [2021-05-02 23:30:51,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 23:30:51,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:51,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 23:30:51,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:30:51,171 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) [2021-05-02 23:30:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:30:55,423 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2021-05-02 23:30:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 23:30:55,424 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 [2021-05-02 23:30:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:30:55,425 INFO L225 Difference]: With dead ends: 340 [2021-05-02 23:30:55,425 INFO L226 Difference]: Without dead ends: 329 [2021-05-02 23:30:55,426 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 798.7ms TimeCoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:30:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-05-02 23:30:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 174. [2021-05-02 23:30:55,431 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) [2021-05-02 23:30:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2021-05-02 23:30:55,432 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 309 [2021-05-02 23:30:55,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:30:55,432 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2021-05-02 23:30:55,432 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) [2021-05-02 23:30:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2021-05-02 23:30:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-05-02 23:30:55,433 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:30:55,433 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] [2021-05-02 23:30:55,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-02 23:30:55,433 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:30:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:30:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1995011701, now seen corresponding path program 38 times [2021-05-02 23:30:55,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:30:55,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99049145] [2021-05-02 23:30:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:30:55,441 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:30:55,442 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:30:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:30:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:30:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:30:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:30:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:30:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:30:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:30:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:30:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:30:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:30:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:30:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:30:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:30:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:30:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:30:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:30:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:30:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:30:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:30:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:30:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:30:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:30:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:30:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:30:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:30:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:30:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:30:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:30:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:30:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:30:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:30:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:30:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:30:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:30:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:30:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:30:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:30:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:30:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:30:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:30:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2021-05-02 23:30:56,462 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:30:56,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99049145] [2021-05-02 23:30:56,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [99049145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:30:56,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:30:56,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-02 23:30:56,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395619342] [2021-05-02 23:30:56,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 23:30:56,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:30:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 23:30:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 23:30:56,464 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) [2021-05-02 23:31:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:01,034 INFO L93 Difference]: Finished difference Result 348 states and 428 transitions. [2021-05-02 23:31:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 23:31:01,034 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 [2021-05-02 23:31:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:01,036 INFO L225 Difference]: With dead ends: 348 [2021-05-02 23:31:01,036 INFO L226 Difference]: Without dead ends: 337 [2021-05-02 23:31:01,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 840.4ms TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 23:31:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-05-02 23:31:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 178. [2021-05-02 23:31:01,042 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) [2021-05-02 23:31:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-05-02 23:31:01,043 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 317 [2021-05-02 23:31:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:01,043 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-05-02 23:31:01,043 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) [2021-05-02 23:31:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-05-02 23:31:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-05-02 23:31:01,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:01,044 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] [2021-05-02 23:31:01,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-02 23:31:01,044 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:01,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1814688026, now seen corresponding path program 39 times [2021-05-02 23:31:01,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:01,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856177460] [2021-05-02 23:31:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:01,050 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:01,051 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2021-05-02 23:31:01,982 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:01,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856177460] [2021-05-02 23:31:01,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856177460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:01,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:01,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-02 23:31:01,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714972908] [2021-05-02 23:31:01,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 23:31:01,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 23:31:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:31:01,983 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) [2021-05-02 23:31:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:06,835 INFO L93 Difference]: Finished difference Result 356 states and 438 transitions. [2021-05-02 23:31:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 23:31:06,836 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 [2021-05-02 23:31:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:06,845 INFO L225 Difference]: With dead ends: 356 [2021-05-02 23:31:06,845 INFO L226 Difference]: Without dead ends: 345 [2021-05-02 23:31:06,846 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 769.5ms TimeCoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:31:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-05-02 23:31:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 182. [2021-05-02 23:31:06,873 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) [2021-05-02 23:31:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2021-05-02 23:31:06,873 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 325 [2021-05-02 23:31:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:06,874 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2021-05-02 23:31:06,874 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) [2021-05-02 23:31:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2021-05-02 23:31:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-05-02 23:31:06,885 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:06,885 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] [2021-05-02 23:31:06,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-02 23:31:06,886 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:06,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1315698367, now seen corresponding path program 40 times [2021-05-02 23:31:06,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:06,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474788339] [2021-05-02 23:31:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:06,903 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:06,904 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2021-05-02 23:31:08,041 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:08,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474788339] [2021-05-02 23:31:08,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1474788339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:08,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:08,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-02 23:31:08,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888772471] [2021-05-02 23:31:08,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 23:31:08,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:08,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 23:31:08,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 23:31:08,043 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) [2021-05-02 23:31:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:12,909 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2021-05-02 23:31:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 23:31:12,910 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 [2021-05-02 23:31:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:12,911 INFO L225 Difference]: With dead ends: 364 [2021-05-02 23:31:12,911 INFO L226 Difference]: Without dead ends: 353 [2021-05-02 23:31:12,912 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 893.0ms TimeCoverageRelationStatistics Valid=125, Invalid=1767, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 23:31:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-02 23:31:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 186. [2021-05-02 23:31:12,917 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) [2021-05-02 23:31:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2021-05-02 23:31:12,918 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 333 [2021-05-02 23:31:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:12,918 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2021-05-02 23:31:12,918 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) [2021-05-02 23:31:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2021-05-02 23:31:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-05-02 23:31:12,919 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:12,919 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] [2021-05-02 23:31:12,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-02 23:31:12,919 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:12,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1259042972, now seen corresponding path program 41 times [2021-05-02 23:31:12,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:12,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126767007] [2021-05-02 23:31:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:12,925 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:12,926 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2021-05-02 23:31:13,982 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:13,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126767007] [2021-05-02 23:31:13,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2126767007] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:13,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:13,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-02 23:31:13,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317803787] [2021-05-02 23:31:13,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 23:31:13,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 23:31:13,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:31:13,984 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) [2021-05-02 23:31:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:18,930 INFO L93 Difference]: Finished difference Result 372 states and 458 transitions. [2021-05-02 23:31:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 23:31:18,931 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 [2021-05-02 23:31:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:18,932 INFO L225 Difference]: With dead ends: 372 [2021-05-02 23:31:18,932 INFO L226 Difference]: Without dead ends: 361 [2021-05-02 23:31:18,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 909.5ms TimeCoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:31:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-05-02 23:31:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 190. [2021-05-02 23:31:18,938 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) [2021-05-02 23:31:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2021-05-02 23:31:18,939 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 341 [2021-05-02 23:31:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:18,939 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2021-05-02 23:31:18,939 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) [2021-05-02 23:31:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2021-05-02 23:31:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-05-02 23:31:18,941 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:18,941 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] [2021-05-02 23:31:18,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-02 23:31:18,941 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash -570991369, now seen corresponding path program 42 times [2021-05-02 23:31:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:18,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301340536] [2021-05-02 23:31:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:18,948 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:18,948 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2021-05-02 23:31:19,998 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:19,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301340536] [2021-05-02 23:31:19,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1301340536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:19,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:19,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-02 23:31:19,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718095647] [2021-05-02 23:31:19,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 23:31:19,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:19,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 23:31:19,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 23:31:19,999 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) [2021-05-02 23:31:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:25,297 INFO L93 Difference]: Finished difference Result 380 states and 468 transitions. [2021-05-02 23:31:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 23:31:25,298 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 [2021-05-02 23:31:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:25,299 INFO L225 Difference]: With dead ends: 380 [2021-05-02 23:31:25,299 INFO L226 Difference]: Without dead ends: 369 [2021-05-02 23:31:25,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 879.9ms TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 23:31:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-05-02 23:31:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 194. [2021-05-02 23:31:25,305 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) [2021-05-02 23:31:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2021-05-02 23:31:25,306 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 349 [2021-05-02 23:31:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:25,306 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2021-05-02 23:31:25,306 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) [2021-05-02 23:31:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2021-05-02 23:31:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-05-02 23:31:25,308 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:25,308 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] [2021-05-02 23:31:25,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-02 23:31:25,308 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash -49105326, now seen corresponding path program 43 times [2021-05-02 23:31:25,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:25,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002699667] [2021-05-02 23:31:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:25,324 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:25,325 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:31:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2021-05-02 23:31:26,488 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:26,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002699667] [2021-05-02 23:31:26,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1002699667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:26,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:26,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-02 23:31:26,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338668560] [2021-05-02 23:31:26,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 23:31:26,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:26,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 23:31:26,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 23:31:26,490 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) [2021-05-02 23:31:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:31,998 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-05-02 23:31:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 23:31:31,998 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 [2021-05-02 23:31:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:32,000 INFO L225 Difference]: With dead ends: 388 [2021-05-02 23:31:32,000 INFO L226 Difference]: Without dead ends: 377 [2021-05-02 23:31:32,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 986.4ms TimeCoverageRelationStatistics Valid=134, Invalid=2028, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 23:31:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-05-02 23:31:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 198. [2021-05-02 23:31:32,006 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) [2021-05-02 23:31:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2021-05-02 23:31:32,007 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 357 [2021-05-02 23:31:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:32,007 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2021-05-02 23:31:32,007 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) [2021-05-02 23:31:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2021-05-02 23:31:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-02 23:31:32,008 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:32,009 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] [2021-05-02 23:31:32,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-02 23:31:32,009 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:32,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1343784109, now seen corresponding path program 44 times [2021-05-02 23:31:32,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:32,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137732391] [2021-05-02 23:31:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:32,015 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:32,016 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:31:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:31:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2021-05-02 23:31:33,194 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:33,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137732391] [2021-05-02 23:31:33,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137732391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:33,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:33,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-02 23:31:33,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800675494] [2021-05-02 23:31:33,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 23:31:33,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 23:31:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 23:31:33,196 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) [2021-05-02 23:31:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:39,784 INFO L93 Difference]: Finished difference Result 396 states and 488 transitions. [2021-05-02 23:31:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 23:31:39,784 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 [2021-05-02 23:31:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:39,786 INFO L225 Difference]: With dead ends: 396 [2021-05-02 23:31:39,786 INFO L226 Difference]: Without dead ends: 385 [2021-05-02 23:31:39,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 987.0ms TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 23:31:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-05-02 23:31:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 202. [2021-05-02 23:31:39,791 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) [2021-05-02 23:31:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2021-05-02 23:31:39,792 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 365 [2021-05-02 23:31:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:39,792 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2021-05-02 23:31:39,792 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) [2021-05-02 23:31:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2021-05-02 23:31:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-05-02 23:31:39,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:39,794 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] [2021-05-02 23:31:39,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-02 23:31:39,794 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1815885816, now seen corresponding path program 45 times [2021-05-02 23:31:39,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:39,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827956708] [2021-05-02 23:31:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:39,799 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:39,800 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:31:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:31:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:31:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2021-05-02 23:31:40,953 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:40,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827956708] [2021-05-02 23:31:40,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827956708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:40,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:40,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-02 23:31:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056683800] [2021-05-02 23:31:40,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 23:31:40,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 23:31:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:31:40,954 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) [2021-05-02 23:31:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:47,007 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2021-05-02 23:31:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 23:31:47,008 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 [2021-05-02 23:31:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:47,009 INFO L225 Difference]: With dead ends: 404 [2021-05-02 23:31:47,010 INFO L226 Difference]: Without dead ends: 393 [2021-05-02 23:31:47,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1002.0ms TimeCoverageRelationStatistics Valid=140, Invalid=2212, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:31:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-05-02 23:31:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 206. [2021-05-02 23:31:47,015 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) [2021-05-02 23:31:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 252 transitions. [2021-05-02 23:31:47,016 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 252 transitions. Word has length 373 [2021-05-02 23:31:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:47,016 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 252 transitions. [2021-05-02 23:31:47,016 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) [2021-05-02 23:31:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 252 transitions. [2021-05-02 23:31:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-05-02 23:31:47,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:47,018 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] [2021-05-02 23:31:47,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-02 23:31:47,018 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:47,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1714454429, now seen corresponding path program 46 times [2021-05-02 23:31:47,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:47,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584625815] [2021-05-02 23:31:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:47,027 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:47,027 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:31:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:31:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:31:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:31:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2021-05-02 23:31:48,288 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:48,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584625815] [2021-05-02 23:31:48,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [584625815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:48,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:48,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-02 23:31:48,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092518755] [2021-05-02 23:31:48,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 23:31:48,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:48,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 23:31:48,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 23:31:48,289 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) [2021-05-02 23:31:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:31:54,617 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2021-05-02 23:31:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 23:31:54,618 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 [2021-05-02 23:31:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:31:54,619 INFO L225 Difference]: With dead ends: 412 [2021-05-02 23:31:54,620 INFO L226 Difference]: Without dead ends: 401 [2021-05-02 23:31:54,620 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1092.0ms TimeCoverageRelationStatistics Valid=143, Invalid=2307, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 23:31:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-05-02 23:31:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 210. [2021-05-02 23:31:54,625 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) [2021-05-02 23:31:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 257 transitions. [2021-05-02 23:31:54,626 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 257 transitions. Word has length 381 [2021-05-02 23:31:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:31:54,627 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 257 transitions. [2021-05-02 23:31:54,627 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) [2021-05-02 23:31:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 257 transitions. [2021-05-02 23:31:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-05-02 23:31:54,630 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:31:54,630 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] [2021-05-02 23:31:54,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-02 23:31:54,630 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:31:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:31:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1224125886, now seen corresponding path program 47 times [2021-05-02 23:31:54,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:31:54,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499027823] [2021-05-02 23:31:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:31:54,644 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:31:54,644 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:31:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:31:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:31:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:31:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:31:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:31:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:31:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:31:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:31:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:31:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:31:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:31:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:31:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:31:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:31:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:31:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:31:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:31:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:31:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:31:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:31:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:31:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:31:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:31:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:31:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:31:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:31:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:31:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:31:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:31:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:31:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:31:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:31:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:31:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:31:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:31:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:31:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:31:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:31:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:31:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:31:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:31:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:31:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:31:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:31:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:31:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:31:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:31:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:31:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:31:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2021-05-02 23:31:55,897 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:31:55,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499027823] [2021-05-02 23:31:55,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [499027823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:31:55,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:31:55,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-02 23:31:55,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131605722] [2021-05-02 23:31:55,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 23:31:55,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:31:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 23:31:55,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:31:55,898 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) [2021-05-02 23:32:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:02,448 INFO L93 Difference]: Finished difference Result 420 states and 518 transitions. [2021-05-02 23:32:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 23:32:02,448 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 [2021-05-02 23:32:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:02,450 INFO L225 Difference]: With dead ends: 420 [2021-05-02 23:32:02,450 INFO L226 Difference]: Without dead ends: 409 [2021-05-02 23:32:02,450 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1074.5ms TimeCoverageRelationStatistics Valid=146, Invalid=2404, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:32:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-05-02 23:32:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 214. [2021-05-02 23:32:02,456 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) [2021-05-02 23:32:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2021-05-02 23:32:02,456 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 389 [2021-05-02 23:32:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:02,457 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2021-05-02 23:32:02,457 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) [2021-05-02 23:32:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2021-05-02 23:32:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-05-02 23:32:02,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:02,458 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] [2021-05-02 23:32:02,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-02 23:32:02,459 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:02,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1661710311, now seen corresponding path program 48 times [2021-05-02 23:32:02,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:02,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974100700] [2021-05-02 23:32:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:02,463 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:02,464 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2021-05-02 23:32:03,745 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:03,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974100700] [2021-05-02 23:32:03,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [974100700] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:03,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:03,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-02 23:32:03,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106437253] [2021-05-02 23:32:03,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 23:32:03,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 23:32:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 23:32:03,747 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) [2021-05-02 23:32:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:10,618 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2021-05-02 23:32:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 23:32:10,619 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 [2021-05-02 23:32:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:10,621 INFO L225 Difference]: With dead ends: 428 [2021-05-02 23:32:10,621 INFO L226 Difference]: Without dead ends: 417 [2021-05-02 23:32:10,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1117.1ms TimeCoverageRelationStatistics Valid=149, Invalid=2503, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 23:32:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-05-02 23:32:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 218. [2021-05-02 23:32:10,628 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) [2021-05-02 23:32:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2021-05-02 23:32:10,628 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 397 [2021-05-02 23:32:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:10,629 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2021-05-02 23:32:10,629 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) [2021-05-02 23:32:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2021-05-02 23:32:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-05-02 23:32:10,630 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:10,630 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] [2021-05-02 23:32:10,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-02 23:32:10,630 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1501337740, now seen corresponding path program 49 times [2021-05-02 23:32:10,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:10,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621670128] [2021-05-02 23:32:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:10,635 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:10,636 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:12,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2021-05-02 23:32:12,006 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:12,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621670128] [2021-05-02 23:32:12,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1621670128] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:12,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:12,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-02 23:32:12,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336034513] [2021-05-02 23:32:12,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 23:32:12,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 23:32:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 23:32:12,008 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) [2021-05-02 23:32:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:19,146 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2021-05-02 23:32:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 23:32:19,147 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 [2021-05-02 23:32:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:19,148 INFO L225 Difference]: With dead ends: 436 [2021-05-02 23:32:19,148 INFO L226 Difference]: Without dead ends: 425 [2021-05-02 23:32:19,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1191.0ms TimeCoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 23:32:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-02 23:32:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 222. [2021-05-02 23:32:19,155 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) [2021-05-02 23:32:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 272 transitions. [2021-05-02 23:32:19,155 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 272 transitions. Word has length 405 [2021-05-02 23:32:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:19,156 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 272 transitions. [2021-05-02 23:32:19,156 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) [2021-05-02 23:32:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 272 transitions. [2021-05-02 23:32:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-05-02 23:32:19,157 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:19,157 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] [2021-05-02 23:32:19,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-02 23:32:19,157 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1956711473, now seen corresponding path program 50 times [2021-05-02 23:32:19,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:19,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890488426] [2021-05-02 23:32:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:19,167 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:19,168 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:32:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2021-05-02 23:32:20,607 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:20,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890488426] [2021-05-02 23:32:20,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [890488426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:20,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:20,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-02 23:32:20,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543605156] [2021-05-02 23:32:20,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 23:32:20,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 23:32:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:32:20,608 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) [2021-05-02 23:32:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:28,142 INFO L93 Difference]: Finished difference Result 444 states and 548 transitions. [2021-05-02 23:32:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 23:32:28,142 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 [2021-05-02 23:32:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:28,144 INFO L225 Difference]: With dead ends: 444 [2021-05-02 23:32:28,144 INFO L226 Difference]: Without dead ends: 433 [2021-05-02 23:32:28,144 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1264.7ms TimeCoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:32:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-05-02 23:32:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 226. [2021-05-02 23:32:28,150 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) [2021-05-02 23:32:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2021-05-02 23:32:28,151 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 413 [2021-05-02 23:32:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:28,151 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2021-05-02 23:32:28,151 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) [2021-05-02 23:32:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2021-05-02 23:32:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-05-02 23:32:28,153 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:28,153 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] [2021-05-02 23:32:28,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-02 23:32:28,153 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2042497750, now seen corresponding path program 51 times [2021-05-02 23:32:28,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:28,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181414660] [2021-05-02 23:32:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:28,164 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:28,165 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:32:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:32:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2021-05-02 23:32:29,643 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:29,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181414660] [2021-05-02 23:32:29,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1181414660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:29,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:29,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-02 23:32:29,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846423653] [2021-05-02 23:32:29,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 23:32:29,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 23:32:29,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 23:32:29,644 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) [2021-05-02 23:32:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:37,539 INFO L93 Difference]: Finished difference Result 452 states and 558 transitions. [2021-05-02 23:32:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 23:32:37,540 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 [2021-05-02 23:32:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:37,542 INFO L225 Difference]: With dead ends: 452 [2021-05-02 23:32:37,542 INFO L226 Difference]: Without dead ends: 441 [2021-05-02 23:32:37,542 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1283.3ms TimeCoverageRelationStatistics Valid=158, Invalid=2812, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 23:32:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-05-02 23:32:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 230. [2021-05-02 23:32:37,549 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) [2021-05-02 23:32:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2021-05-02 23:32:37,551 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 421 [2021-05-02 23:32:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:37,551 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2021-05-02 23:32:37,551 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) [2021-05-02 23:32:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2021-05-02 23:32:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-05-02 23:32:37,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:37,553 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] [2021-05-02 23:32:37,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-02 23:32:37,553 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:37,553 INFO L82 PathProgramCache]: Analyzing trace with hash -421041275, now seen corresponding path program 52 times [2021-05-02 23:32:37,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:37,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407806288] [2021-05-02 23:32:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:37,563 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:37,564 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:32:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:32:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:32:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2021-05-02 23:32:39,112 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:39,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407806288] [2021-05-02 23:32:39,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1407806288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:39,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:39,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-02 23:32:39,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80233969] [2021-05-02 23:32:39,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 23:32:39,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 23:32:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 23:32:39,114 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) [2021-05-02 23:32:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:47,408 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2021-05-02 23:32:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 23:32:47,409 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 [2021-05-02 23:32:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:47,411 INFO L225 Difference]: With dead ends: 460 [2021-05-02 23:32:47,411 INFO L226 Difference]: Without dead ends: 449 [2021-05-02 23:32:47,411 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1345.3ms TimeCoverageRelationStatistics Valid=161, Invalid=2919, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 23:32:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-05-02 23:32:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 234. [2021-05-02 23:32:47,417 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) [2021-05-02 23:32:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2021-05-02 23:32:47,418 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 429 [2021-05-02 23:32:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:47,418 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2021-05-02 23:32:47,418 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) [2021-05-02 23:32:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2021-05-02 23:32:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-02 23:32:47,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:47,420 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] [2021-05-02 23:32:47,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-02 23:32:47,421 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash 302667488, now seen corresponding path program 53 times [2021-05-02 23:32:47,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:47,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932974896] [2021-05-02 23:32:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:47,429 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:47,430 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:32:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:32:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:32:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:32:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2021-05-02 23:32:49,103 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:49,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932974896] [2021-05-02 23:32:49,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [932974896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:49,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:49,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-02 23:32:49,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553348348] [2021-05-02 23:32:49,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 23:32:49,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:49,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 23:32:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:32:49,105 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) [2021-05-02 23:32:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:32:57,756 INFO L93 Difference]: Finished difference Result 468 states and 578 transitions. [2021-05-02 23:32:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 23:32:57,757 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 [2021-05-02 23:32:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:32:57,759 INFO L225 Difference]: With dead ends: 468 [2021-05-02 23:32:57,759 INFO L226 Difference]: Without dead ends: 457 [2021-05-02 23:32:57,759 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1381.8ms TimeCoverageRelationStatistics Valid=164, Invalid=3028, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:32:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-05-02 23:32:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 238. [2021-05-02 23:32:57,765 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) [2021-05-02 23:32:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 292 transitions. [2021-05-02 23:32:57,766 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 292 transitions. Word has length 437 [2021-05-02 23:32:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:32:57,766 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 292 transitions. [2021-05-02 23:32:57,766 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) [2021-05-02 23:32:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 292 transitions. [2021-05-02 23:32:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-05-02 23:32:57,768 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:32:57,768 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] [2021-05-02 23:32:57,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-02 23:32:57,768 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:32:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:32:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2124040389, now seen corresponding path program 54 times [2021-05-02 23:32:57,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:32:57,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382272337] [2021-05-02 23:32:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:32:57,773 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:32:57,774 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:32:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:32:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:32:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:32:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:32:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:32:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:32:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:32:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:32:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:32:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:32:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:32:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:32:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:32:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:32:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:32:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:32:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:32:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:32:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:32:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:32:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:32:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:32:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:32:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:32:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:32:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:32:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:32:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:32:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:32:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:32:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:32:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:32:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:32:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:32:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:32:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:32:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:32:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:32:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:32:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:32:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:32:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:32:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:32:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:32:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:32:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:32:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:32:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:32:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:32:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:32:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:32:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:32:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:32:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:32:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:32:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:32:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2021-05-02 23:32:59,433 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:32:59,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382272337] [2021-05-02 23:32:59,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [382272337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:32:59,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:32:59,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-02 23:32:59,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637925128] [2021-05-02 23:32:59,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 23:32:59,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:32:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 23:32:59,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 23:32:59,435 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) [2021-05-02 23:33:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:08,464 INFO L93 Difference]: Finished difference Result 476 states and 588 transitions. [2021-05-02 23:33:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 23:33:08,465 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 [2021-05-02 23:33:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:08,466 INFO L225 Difference]: With dead ends: 476 [2021-05-02 23:33:08,466 INFO L226 Difference]: Without dead ends: 465 [2021-05-02 23:33:08,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1450.8ms TimeCoverageRelationStatistics Valid=167, Invalid=3139, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 23:33:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-05-02 23:33:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 242. [2021-05-02 23:33:08,473 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) [2021-05-02 23:33:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 297 transitions. [2021-05-02 23:33:08,473 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 297 transitions. Word has length 445 [2021-05-02 23:33:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:08,474 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 297 transitions. [2021-05-02 23:33:08,474 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) [2021-05-02 23:33:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 297 transitions. [2021-05-02 23:33:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-05-02 23:33:08,475 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:08,476 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] [2021-05-02 23:33:08,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-02 23:33:08,476 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:08,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1011577706, now seen corresponding path program 55 times [2021-05-02 23:33:08,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:08,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205374445] [2021-05-02 23:33:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:08,481 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:33:08,482 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:33:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:33:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:33:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:33:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:33:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:33:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:33:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:33:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:33:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:33:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:33:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:33:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:33:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:33:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:33:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:33:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:33:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:33:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:33:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:33:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:33:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:33:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:33:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:33:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:33:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:33:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:33:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:33:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:33:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:33:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:33:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:33:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:33:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:33:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:33:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:33:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:33:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:33:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:33:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:33:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:33:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:33:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:33:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:33:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:33:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:33:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:33:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:33:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:33:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:33:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:33:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:33:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:33:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:33:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:33:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:33:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2021-05-02 23:33:10,182 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:10,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205374445] [2021-05-02 23:33:10,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [205374445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:10,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:10,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-02 23:33:10,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661916779] [2021-05-02 23:33:10,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 23:33:10,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:10,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 23:33:10,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:33:10,184 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) [2021-05-02 23:33:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:19,408 INFO L93 Difference]: Finished difference Result 484 states and 598 transitions. [2021-05-02 23:33:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 23:33:19,409 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 [2021-05-02 23:33:19,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:19,410 INFO L225 Difference]: With dead ends: 484 [2021-05-02 23:33:19,410 INFO L226 Difference]: Without dead ends: 473 [2021-05-02 23:33:19,411 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1478.3ms TimeCoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:33:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-05-02 23:33:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 246. [2021-05-02 23:33:19,417 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) [2021-05-02 23:33:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2021-05-02 23:33:19,417 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 453 [2021-05-02 23:33:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:19,418 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2021-05-02 23:33:19,418 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) [2021-05-02 23:33:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2021-05-02 23:33:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-05-02 23:33:19,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:19,419 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] [2021-05-02 23:33:19,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-02 23:33:19,420 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2092029681, now seen corresponding path program 56 times [2021-05-02 23:33:19,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:19,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529396741] [2021-05-02 23:33:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:19,425 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:33:19,425 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:33:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:33:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:33:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:33:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:33:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:33:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:33:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:33:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:33:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:33:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:33:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:33:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:33:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:33:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:33:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:33:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:33:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:33:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:33:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:33:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:33:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:33:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:33:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:33:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:33:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:33:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:33:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:33:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:33:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:33:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:33:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:33:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:33:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:33:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:33:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:33:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:33:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:33:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:33:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:33:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:33:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:33:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:33:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:33:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:33:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:33:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:33:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:33:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:33:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:33:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:33:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:33:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:33:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:33:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:33:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:33:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:33:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2021-05-02 23:33:21,182 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:21,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529396741] [2021-05-02 23:33:21,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [529396741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:21,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:21,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-02 23:33:21,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203562662] [2021-05-02 23:33:21,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 23:33:21,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:21,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 23:33:21,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 23:33:21,184 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) [2021-05-02 23:33:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:31,003 INFO L93 Difference]: Finished difference Result 492 states and 608 transitions. [2021-05-02 23:33:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 23:33:31,004 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 [2021-05-02 23:33:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:31,006 INFO L225 Difference]: With dead ends: 492 [2021-05-02 23:33:31,006 INFO L226 Difference]: Without dead ends: 481 [2021-05-02 23:33:31,006 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1539.0ms TimeCoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 23:33:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-05-02 23:33:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 250. [2021-05-02 23:33:31,012 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) [2021-05-02 23:33:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 307 transitions. [2021-05-02 23:33:31,013 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 307 transitions. Word has length 461 [2021-05-02 23:33:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:31,013 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 307 transitions. [2021-05-02 23:33:31,013 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) [2021-05-02 23:33:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 307 transitions. [2021-05-02 23:33:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-05-02 23:33:31,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:31,015 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] [2021-05-02 23:33:31,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-02 23:33:31,015 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:31,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1696110156, now seen corresponding path program 57 times [2021-05-02 23:33:31,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:31,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375541093] [2021-05-02 23:33:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:31,020 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:33:31,021 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:33:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:33:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:33:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:33:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:33:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:33:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:33:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:33:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:33:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:33:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:33:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:33:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:33:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:33:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:33:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:33:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:33:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:33:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:33:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:33:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:33:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:33:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:33:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:33:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:33:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:33:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:33:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:33:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:33:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:33:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:33:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:33:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:33:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:33:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:33:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:33:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:33:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:33:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:33:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:33:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:33:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:33:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:33:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:33:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:33:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:33:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:33:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:33:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:33:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:33:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:33:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:33:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:33:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:33:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:33:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:33:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:33:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:33:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2021-05-02 23:33:32,904 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:32,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375541093] [2021-05-02 23:33:32,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1375541093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:32,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:32,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-02 23:33:32,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814380107] [2021-05-02 23:33:32,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 23:33:32,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:32,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 23:33:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 23:33:32,905 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) [2021-05-02 23:33:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:43,534 INFO L93 Difference]: Finished difference Result 500 states and 618 transitions. [2021-05-02 23:33:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 23:33:43,535 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 [2021-05-02 23:33:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:43,537 INFO L225 Difference]: With dead ends: 500 [2021-05-02 23:33:43,537 INFO L226 Difference]: Without dead ends: 489 [2021-05-02 23:33:43,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1663.0ms TimeCoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 23:33:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-05-02 23:33:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 254. [2021-05-02 23:33:43,544 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) [2021-05-02 23:33:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 312 transitions. [2021-05-02 23:33:43,544 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 312 transitions. Word has length 469 [2021-05-02 23:33:43,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:43,545 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 312 transitions. [2021-05-02 23:33:43,545 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) [2021-05-02 23:33:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 312 transitions. [2021-05-02 23:33:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-05-02 23:33:43,546 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:43,546 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] [2021-05-02 23:33:43,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-02 23:33:43,547 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1252248231, now seen corresponding path program 58 times [2021-05-02 23:33:43,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:43,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478624819] [2021-05-02 23:33:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:43,552 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:33:43,553 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:33:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:33:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:33:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:33:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:33:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:33:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:33:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:33:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:33:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:33:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:33:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:33:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:33:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:33:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:33:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:33:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:33:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:33:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:33:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:33:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:33:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:33:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:33:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:33:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:33:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:33:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:33:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:33:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:33:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:33:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:33:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:33:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:33:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:33:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:33:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:33:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:33:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:33:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:33:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:33:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:33:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:33:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:33:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:33:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:33:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:33:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:33:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:33:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:33:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:33:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:33:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:33:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:33:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:33:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:33:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:33:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:33:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:33:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:33:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2021-05-02 23:33:45,457 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:45,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478624819] [2021-05-02 23:33:45,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [478624819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:45,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:45,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-02 23:33:45,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094050707] [2021-05-02 23:33:45,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 23:33:45,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:45,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 23:33:45,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 23:33:45,459 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) [2021-05-02 23:33:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:33:56,347 INFO L93 Difference]: Finished difference Result 508 states and 628 transitions. [2021-05-02 23:33:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 23:33:56,348 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 [2021-05-02 23:33:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:33:56,350 INFO L225 Difference]: With dead ends: 508 [2021-05-02 23:33:56,350 INFO L226 Difference]: Without dead ends: 497 [2021-05-02 23:33:56,350 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1668.3ms TimeCoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 23:33:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-05-02 23:33:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 258. [2021-05-02 23:33:56,362 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) [2021-05-02 23:33:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2021-05-02 23:33:56,363 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 477 [2021-05-02 23:33:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:33:56,363 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2021-05-02 23:33:56,372 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) [2021-05-02 23:33:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2021-05-02 23:33:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-05-02 23:33:56,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:33:56,374 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] [2021-05-02 23:33:56,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-02 23:33:56,375 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:33:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:33:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 269382658, now seen corresponding path program 59 times [2021-05-02 23:33:56,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:33:56,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987254939] [2021-05-02 23:33:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:33:56,392 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:33:56,395 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:33:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:33:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:33:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:33:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:33:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:33:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:33:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:33:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:33:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:33:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:33:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:33:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:33:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:33:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:33:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:33:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:33:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:33:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:33:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:33:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:33:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:33:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:33:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:33:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:33:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:33:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:33:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:33:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:33:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:33:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:33:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:33:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:33:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:33:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:33:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:33:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:33:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:33:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:33:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:33:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:33:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:33:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:33:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:33:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:33:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:33:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:33:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:33:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:33:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:33:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:33:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:33:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:33:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:33:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:33:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:33:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:33:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:33:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:33:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:33:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:33:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:33:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2021-05-02 23:33:58,720 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:33:58,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987254939] [2021-05-02 23:33:58,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [987254939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:33:58,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:33:58,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-02 23:33:58,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374811208] [2021-05-02 23:33:58,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 23:33:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:33:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 23:33:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 23:33:58,721 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) [2021-05-02 23:34:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:10,456 INFO L93 Difference]: Finished difference Result 516 states and 638 transitions. [2021-05-02 23:34:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 23:34:10,457 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 [2021-05-02 23:34:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:10,459 INFO L225 Difference]: With dead ends: 516 [2021-05-02 23:34:10,459 INFO L226 Difference]: Without dead ends: 505 [2021-05-02 23:34:10,460 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1935.8ms TimeCoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 23:34:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-05-02 23:34:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 262. [2021-05-02 23:34:10,478 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) [2021-05-02 23:34:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2021-05-02 23:34:10,479 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 485 [2021-05-02 23:34:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:10,479 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2021-05-02 23:34:10,479 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) [2021-05-02 23:34:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2021-05-02 23:34:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-05-02 23:34:10,481 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:10,481 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] [2021-05-02 23:34:10,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-02 23:34:10,481 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1391226275, now seen corresponding path program 60 times [2021-05-02 23:34:10,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:10,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882824439] [2021-05-02 23:34:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:10,486 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:34:10,487 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:34:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:34:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:34:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:34:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:34:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:34:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:34:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:34:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:34:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:34:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:34:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:34:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:34:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:34:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:34:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:34:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:34:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:34:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:34:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:34:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:34:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:34:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:34:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:34:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:34:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:34:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:34:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:34:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:34:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:34:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:34:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:34:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:34:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:34:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:34:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:34:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:34:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:34:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:34:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:34:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:34:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:34:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:34:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:34:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:34:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:34:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:34:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:34:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:34:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:34:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:34:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:34:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:34:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:34:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:34:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:34:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:34:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:34:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:34:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:34:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:34:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2021-05-02 23:34:12,599 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:12,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882824439] [2021-05-02 23:34:12,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [882824439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:12,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:12,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-02 23:34:12,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678689717] [2021-05-02 23:34:12,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 23:34:12,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:12,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 23:34:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 23:34:12,600 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) [2021-05-02 23:34:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:24,622 INFO L93 Difference]: Finished difference Result 524 states and 648 transitions. [2021-05-02 23:34:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 23:34:24,623 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 [2021-05-02 23:34:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:24,625 INFO L225 Difference]: With dead ends: 524 [2021-05-02 23:34:24,625 INFO L226 Difference]: Without dead ends: 513 [2021-05-02 23:34:24,626 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1876.1ms TimeCoverageRelationStatistics Valid=185, Invalid=3847, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 23:34:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-05-02 23:34:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 266. [2021-05-02 23:34:24,633 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) [2021-05-02 23:34:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions. [2021-05-02 23:34:24,633 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 493 [2021-05-02 23:34:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:24,634 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 327 transitions. [2021-05-02 23:34:24,634 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) [2021-05-02 23:34:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions. [2021-05-02 23:34:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-05-02 23:34:24,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:24,636 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] [2021-05-02 23:34:24,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-02 23:34:24,636 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:24,636 INFO L82 PathProgramCache]: Analyzing trace with hash 778970552, now seen corresponding path program 61 times [2021-05-02 23:34:24,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:24,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514437828] [2021-05-02 23:34:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:24,641 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:34:24,642 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:34:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:34:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:34:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:34:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:34:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:34:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:34:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:34:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:34:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:34:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:34:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:34:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:34:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:34:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:34:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:34:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:34:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:34:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:34:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:34:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:34:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:34:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:34:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:34:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:34:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:34:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:34:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:34:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:34:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:34:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:34:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:34:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:34:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:34:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:34:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:34:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:34:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:34:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:34:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:34:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:34:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:34:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:34:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:34:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:34:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:34:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:34:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:34:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:34:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:34:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:34:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:34:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:34:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:34:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:34:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:34:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:34:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:34:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:34:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:34:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:34:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:34:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2021-05-02 23:34:27,039 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:27,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514437828] [2021-05-02 23:34:27,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1514437828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:27,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:27,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-02 23:34:27,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416188128] [2021-05-02 23:34:27,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 23:34:27,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:27,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 23:34:27,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 23:34:27,040 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) [2021-05-02 23:34:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:39,903 INFO L93 Difference]: Finished difference Result 532 states and 658 transitions. [2021-05-02 23:34:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 23:34:39,904 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 [2021-05-02 23:34:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:39,906 INFO L225 Difference]: With dead ends: 532 [2021-05-02 23:34:39,906 INFO L226 Difference]: Without dead ends: 521 [2021-05-02 23:34:39,906 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2004.3ms TimeCoverageRelationStatistics Valid=188, Invalid=3972, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 23:34:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-05-02 23:34:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 270. [2021-05-02 23:34:39,914 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) [2021-05-02 23:34:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2021-05-02 23:34:39,914 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 501 [2021-05-02 23:34:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:39,915 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2021-05-02 23:34:39,915 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) [2021-05-02 23:34:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2021-05-02 23:34:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-05-02 23:34:39,917 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:39,917 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] [2021-05-02 23:34:39,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-02 23:34:39,917 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:39,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1244058093, now seen corresponding path program 62 times [2021-05-02 23:34:39,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:39,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570307900] [2021-05-02 23:34:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:39,923 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:34:39,924 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:34:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:34:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:34:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:34:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:34:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:34:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:34:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:34:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:34:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:34:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:34:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:34:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:34:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:34:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:34:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:34:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:34:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:34:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:34:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:34:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:34:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:34:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:34:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:34:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:34:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:34:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:34:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:34:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:34:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:34:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:34:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:34:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:34:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:34:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:34:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:34:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:34:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:34:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:34:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:34:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:34:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:34:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:34:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:34:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:34:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:34:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:34:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:34:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:34:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:34:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:34:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:34:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:34:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:34:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:34:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:34:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:34:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:34:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:34:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:34:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:34:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:34:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:34:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2021-05-02 23:34:42,228 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:42,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570307900] [2021-05-02 23:34:42,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570307900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:42,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:42,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-02 23:34:42,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328517146] [2021-05-02 23:34:42,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 23:34:42,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:42,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 23:34:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 23:34:42,230 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) [2021-05-02 23:34:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:34:55,734 INFO L93 Difference]: Finished difference Result 540 states and 668 transitions. [2021-05-02 23:34:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 23:34:55,735 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 [2021-05-02 23:34:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:34:55,737 INFO L225 Difference]: With dead ends: 540 [2021-05-02 23:34:55,737 INFO L226 Difference]: Without dead ends: 529 [2021-05-02 23:34:55,737 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2003.1ms TimeCoverageRelationStatistics Valid=191, Invalid=4099, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 23:34:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-05-02 23:34:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 274. [2021-05-02 23:34:55,745 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) [2021-05-02 23:34:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 337 transitions. [2021-05-02 23:34:55,746 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 337 transitions. Word has length 509 [2021-05-02 23:34:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:34:55,746 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 337 transitions. [2021-05-02 23:34:55,747 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) [2021-05-02 23:34:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 337 transitions. [2021-05-02 23:34:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-05-02 23:34:55,748 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:34:55,749 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] [2021-05-02 23:34:55,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-02 23:34:55,749 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:34:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:34:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2047847278, now seen corresponding path program 63 times [2021-05-02 23:34:55,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:34:55,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573139172] [2021-05-02 23:34:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:34:55,755 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:34:55,756 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:34:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:34:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:34:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:34:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:34:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:34:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:34:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:34:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:34:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:34:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:34:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:34:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:34:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:34:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:34:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:34:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:34:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:34:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:34:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:34:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:34:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:34:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:34:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:34:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:34:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:34:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:34:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:34:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:34:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:34:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:34:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:34:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:34:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:34:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:34:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:34:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:34:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:34:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:34:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:34:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:34:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:34:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:34:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:34:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:34:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:34:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:34:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:34:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:34:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:34:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:34:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:34:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:34:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:34:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:34:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:34:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:34:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:34:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:34:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:34:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:34:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:34:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:34:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:34:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:34:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:34:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2021-05-02 23:34:58,259 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:34:58,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573139172] [2021-05-02 23:34:58,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [573139172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:34:58,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:34:58,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-02 23:34:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704727924] [2021-05-02 23:34:58,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 23:34:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:34:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 23:34:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 23:34:58,261 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) [2021-05-02 23:35:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:35:14,329 INFO L93 Difference]: Finished difference Result 548 states and 678 transitions. [2021-05-02 23:35:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 23:35:14,330 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 [2021-05-02 23:35:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:35:14,333 INFO L225 Difference]: With dead ends: 548 [2021-05-02 23:35:14,333 INFO L226 Difference]: Without dead ends: 537 [2021-05-02 23:35:14,333 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2199.9ms TimeCoverageRelationStatistics Valid=194, Invalid=4228, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 23:35:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-05-02 23:35:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 278. [2021-05-02 23:35:14,362 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) [2021-05-02 23:35:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2021-05-02 23:35:14,363 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 517 [2021-05-02 23:35:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:35:14,364 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2021-05-02 23:35:14,364 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) [2021-05-02 23:35:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2021-05-02 23:35:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-05-02 23:35:14,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:35:14,366 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] [2021-05-02 23:35:14,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-02 23:35:14,366 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:35:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:35:14,367 INFO L82 PathProgramCache]: Analyzing trace with hash -959668791, now seen corresponding path program 64 times [2021-05-02 23:35:14,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:35:14,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066066107] [2021-05-02 23:35:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:35:14,376 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:35:14,378 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:35:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:35:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:35:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:35:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:35:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:35:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:35:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:35:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:35:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:35:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:35:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:35:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:35:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:35:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:35:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:35:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:35:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:35:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:35:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:35:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:35:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:35:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:35:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:35:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:35:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:35:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:35:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:35:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:35:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:35:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:35:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:35:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:35:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:35:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:35:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:35:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:35:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:35:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:35:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:35:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:35:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:35:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:35:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:35:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:35:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:35:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:35:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:35:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:35:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:35:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:35:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:35:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:35:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:35:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:35:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:35:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:35:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:35:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:35:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:35:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:35:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:35:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:35:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:35:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:35:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:35:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2021-05-02 23:35:17,435 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:17,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066066107] [2021-05-02 23:35:17,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1066066107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:17,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:17,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-02 23:35:17,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148975837] [2021-05-02 23:35:17,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 23:35:17,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 23:35:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 23:35:17,437 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) [2021-05-02 23:35:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:35:33,593 INFO L93 Difference]: Finished difference Result 556 states and 688 transitions. [2021-05-02 23:35:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 23:35:33,594 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 [2021-05-02 23:35:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:35:33,597 INFO L225 Difference]: With dead ends: 556 [2021-05-02 23:35:33,597 INFO L226 Difference]: Without dead ends: 545 [2021-05-02 23:35:33,597 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2585.0ms TimeCoverageRelationStatistics Valid=197, Invalid=4359, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 23:35:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-05-02 23:35:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 282. [2021-05-02 23:35:33,606 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) [2021-05-02 23:35:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 347 transitions. [2021-05-02 23:35:33,606 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 347 transitions. Word has length 525 [2021-05-02 23:35:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:35:33,607 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 347 transitions. [2021-05-02 23:35:33,607 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) [2021-05-02 23:35:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 347 transitions. [2021-05-02 23:35:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-05-02 23:35:33,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:35:33,609 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] [2021-05-02 23:35:33,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-02 23:35:33,610 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:35:33,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:35:33,610 INFO L82 PathProgramCache]: Analyzing trace with hash -53803740, now seen corresponding path program 65 times [2021-05-02 23:35:33,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:35:33,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147201019] [2021-05-02 23:35:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:35:33,619 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:35:33,620 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:35:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:35:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:35:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:35:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:35:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:35:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:35:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:35:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:35:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:35:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:35:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:35:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:35:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:35:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:35:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:35:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:35:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:35:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:35:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:35:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:35:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:35:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:35:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:35:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:35:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:35:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:35:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:35:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:35:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:35:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:35:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:35:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:35:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:35:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:35:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:35:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:35:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:35:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:35:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:35:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:35:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:35:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:35:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:35:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:35:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:35:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:35:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:35:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:35:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:35:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:35:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:35:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:35:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:35:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:35:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:35:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:35:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:35:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:35:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:35:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:35:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:35:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:35:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:35:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:35:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:35:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:35:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2021-05-02 23:35:36,700 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:36,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147201019] [2021-05-02 23:35:36,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2147201019] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:36,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:36,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-02 23:35:36,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902751165] [2021-05-02 23:35:36,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 23:35:36,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:36,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 23:35:36,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:35:36,702 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) [2021-05-02 23:35:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:35:53,257 INFO L93 Difference]: Finished difference Result 564 states and 698 transitions. [2021-05-02 23:35:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 23:35:53,258 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 [2021-05-02 23:35:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:35:53,261 INFO L225 Difference]: With dead ends: 564 [2021-05-02 23:35:53,261 INFO L226 Difference]: Without dead ends: 553 [2021-05-02 23:35:53,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2692.4ms TimeCoverageRelationStatistics Valid=200, Invalid=4492, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:35:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-05-02 23:35:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 286. [2021-05-02 23:35:53,273 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) [2021-05-02 23:35:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 352 transitions. [2021-05-02 23:35:53,273 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 352 transitions. Word has length 533 [2021-05-02 23:35:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:35:53,274 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 352 transitions. [2021-05-02 23:35:53,274 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) [2021-05-02 23:35:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 352 transitions. [2021-05-02 23:35:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-05-02 23:35:53,281 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:35:53,281 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] [2021-05-02 23:35:53,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-02 23:35:53,281 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:35:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:35:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1849302657, now seen corresponding path program 66 times [2021-05-02 23:35:53,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:35:53,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137519098] [2021-05-02 23:35:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:35:53,302 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:35:53,303 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:35:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:35:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:35:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:35:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:35:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:35:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:35:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:35:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:35:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:35:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:35:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:35:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:35:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:35:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:35:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:35:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:35:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:35:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:35:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:35:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:35:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:35:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:35:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:35:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:35:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:35:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:35:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:35:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:35:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:35:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:35:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:35:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:35:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:35:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:35:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:35:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:35:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:35:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:35:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:35:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:35:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:35:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:35:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:35:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:35:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:35:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:35:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:35:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:35:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:35:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:35:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:35:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:35:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:35:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:35:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:35:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:35:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:35:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:35:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:35:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:35:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:35:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:35:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:35:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:35:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:35:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:35:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:35:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:35:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2021-05-02 23:35:56,372 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:35:56,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137519098] [2021-05-02 23:35:56,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1137519098] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:35:56,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:35:56,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-02 23:35:56,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123110178] [2021-05-02 23:35:56,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 23:35:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:35:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 23:35:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 23:35:56,373 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) [2021-05-02 23:36:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:36:13,116 INFO L93 Difference]: Finished difference Result 572 states and 708 transitions. [2021-05-02 23:36:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 23:36:13,118 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 [2021-05-02 23:36:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:36:13,120 INFO L225 Difference]: With dead ends: 572 [2021-05-02 23:36:13,120 INFO L226 Difference]: Without dead ends: 561 [2021-05-02 23:36:13,121 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2572.8ms TimeCoverageRelationStatistics Valid=203, Invalid=4627, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 23:36:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-05-02 23:36:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 290. [2021-05-02 23:36:13,129 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) [2021-05-02 23:36:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2021-05-02 23:36:13,130 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 541 [2021-05-02 23:36:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:36:13,131 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2021-05-02 23:36:13,131 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) [2021-05-02 23:36:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2021-05-02 23:36:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-05-02 23:36:13,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:36:13,133 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] [2021-05-02 23:36:13,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-02 23:36:13,133 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:36:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:36:13,134 INFO L82 PathProgramCache]: Analyzing trace with hash 276312794, now seen corresponding path program 67 times [2021-05-02 23:36:13,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:36:13,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913843292] [2021-05-02 23:36:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:36:13,140 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:36:13,141 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:36:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:36:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:36:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:36:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:36:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:36:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:36:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:36:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:36:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:36:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:36:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:36:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:36:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:36:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:36:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:36:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:36:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:36:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:36:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:36:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:36:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:36:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:36:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:36:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:36:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:36:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:36:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:36:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:36:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:36:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:36:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:36:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:36:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:36:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:36:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:36:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:36:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:36:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:36:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:36:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:36:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:36:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:36:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:36:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:36:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:36:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:36:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:36:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:36:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:36:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:36:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:36:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:36:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:36:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:36:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:36:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:36:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:36:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:36:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:36:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:36:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:36:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:36:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:36:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:36:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:36:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:36:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:36:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:36:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2021-05-02 23:36:16,123 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:36:16,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913843292] [2021-05-02 23:36:16,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1913843292] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:36:16,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:36:16,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-02 23:36:16,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838548473] [2021-05-02 23:36:16,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 23:36:16,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:36:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 23:36:16,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 23:36:16,125 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) [2021-05-02 23:36:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:36:33,070 INFO L93 Difference]: Finished difference Result 580 states and 718 transitions. [2021-05-02 23:36:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 23:36:33,071 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 [2021-05-02 23:36:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:36:33,074 INFO L225 Difference]: With dead ends: 580 [2021-05-02 23:36:33,074 INFO L226 Difference]: Without dead ends: 569 [2021-05-02 23:36:33,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2556.5ms TimeCoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 23:36:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-05-02 23:36:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 294. [2021-05-02 23:36:33,084 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) [2021-05-02 23:36:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2021-05-02 23:36:33,084 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 549 [2021-05-02 23:36:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:36:33,085 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2021-05-02 23:36:33,085 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) [2021-05-02 23:36:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2021-05-02 23:36:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-05-02 23:36:33,087 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:36:33,087 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] [2021-05-02 23:36:33,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-02 23:36:33,088 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:36:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:36:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 412940597, now seen corresponding path program 68 times [2021-05-02 23:36:33,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:36:33,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134536563] [2021-05-02 23:36:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:36:33,110 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:36:33,111 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:36:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:36:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:36:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:36:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:36:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:36:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:36:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:36:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:36:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:36:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:36:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:36:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:36:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:36:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:36:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:36:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:36:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:36:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:36:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:36:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:36:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:36:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:36:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:36:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:36:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:36:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:36:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:36:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:36:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:36:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:36:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:36:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:36:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:36:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:36:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:36:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:36:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:36:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:36:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:36:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:36:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:36:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:36:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:36:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:36:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:36:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:36:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:36:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:36:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:36:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:36:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:36:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:36:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:36:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:36:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:36:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:36:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:36:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:36:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:36:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:36:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:36:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:36:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:36:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:36:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:36:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:36:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:36:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:36:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:36:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2021-05-02 23:36:36,376 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:36:36,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134536563] [2021-05-02 23:36:36,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [134536563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:36:36,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:36:36,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-02 23:36:36,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972665802] [2021-05-02 23:36:36,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 23:36:36,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:36:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 23:36:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 23:36:36,378 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) [2021-05-02 23:36:53,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:36:53,963 INFO L93 Difference]: Finished difference Result 588 states and 728 transitions. [2021-05-02 23:36:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 23:36:53,965 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 [2021-05-02 23:36:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:36:53,967 INFO L225 Difference]: With dead ends: 588 [2021-05-02 23:36:53,967 INFO L226 Difference]: Without dead ends: 577 [2021-05-02 23:36:53,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2839.3ms TimeCoverageRelationStatistics Valid=209, Invalid=4903, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 23:36:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-05-02 23:36:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 298. [2021-05-02 23:36:53,978 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) [2021-05-02 23:36:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2021-05-02 23:36:53,979 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 557 [2021-05-02 23:36:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:36:53,980 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2021-05-02 23:36:53,980 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) [2021-05-02 23:36:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2021-05-02 23:36:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-05-02 23:36:53,982 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:36:53,983 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] [2021-05-02 23:36:53,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-02 23:36:53,983 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:36:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:36:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1592734864, now seen corresponding path program 69 times [2021-05-02 23:36:53,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:36:53,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337920395] [2021-05-02 23:36:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:36:53,992 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:36:53,994 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:36:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:36:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:36:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:36:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:36:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:36:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:36:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:36:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:36:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:36:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:36:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:36:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:36:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:36:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:36:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:36:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:36:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:36:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:36:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:36:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:36:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:36:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:36:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:36:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:36:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:36:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:36:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:36:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:36:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:36:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:36:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:36:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:36:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:36:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:36:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:36:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:36:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:36:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:36:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:36:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:36:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:36:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:36:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:36:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:36:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:36:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:36:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:36:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:36:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:36:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:36:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:36:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:36:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:36:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:36:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:36:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:36:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:36:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:36:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:36:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:36:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:36:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:36:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:36:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:36:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:36:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:36:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:36:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:36:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:36:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:36:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:36:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2021-05-02 23:36:57,225 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:36:57,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337920395] [2021-05-02 23:36:57,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1337920395] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:36:57,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:36:57,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-02 23:36:57,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686636099] [2021-05-02 23:36:57,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 23:36:57,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:36:57,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 23:36:57,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:36:57,227 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) [2021-05-02 23:37:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:37:15,512 INFO L93 Difference]: Finished difference Result 596 states and 738 transitions. [2021-05-02 23:37:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 23:37:15,515 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 [2021-05-02 23:37:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:37:15,517 INFO L225 Difference]: With dead ends: 596 [2021-05-02 23:37:15,517 INFO L226 Difference]: Without dead ends: 585 [2021-05-02 23:37:15,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2774.1ms TimeCoverageRelationStatistics Valid=212, Invalid=5044, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:37:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-05-02 23:37:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 302. [2021-05-02 23:37:15,528 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) [2021-05-02 23:37:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 372 transitions. [2021-05-02 23:37:15,529 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 372 transitions. Word has length 565 [2021-05-02 23:37:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:37:15,529 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 372 transitions. [2021-05-02 23:37:15,529 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) [2021-05-02 23:37:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 372 transitions. [2021-05-02 23:37:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-05-02 23:37:15,532 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:37:15,532 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] [2021-05-02 23:37:15,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-02 23:37:15,532 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:37:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:37:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1389763349, now seen corresponding path program 70 times [2021-05-02 23:37:15,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:37:15,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410139846] [2021-05-02 23:37:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:37:15,541 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:37:15,542 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:37:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:37:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:37:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:37:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:37:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:37:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:37:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:37:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:37:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:37:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:37:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:37:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:37:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:37:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:37:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:37:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:37:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:37:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:37:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:37:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:37:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:37:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:37:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:37:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:37:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:37:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:37:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:37:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:37:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:37:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:37:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:37:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:37:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:37:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:37:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:37:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:37:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:37:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:37:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:37:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:37:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:37:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:37:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:37:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:37:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:37:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:37:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:37:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:37:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:37:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:37:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:37:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:37:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:37:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:37:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:37:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:37:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:37:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:37:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:37:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:37:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:37:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:37:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:37:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:37:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:37:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:37:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:37:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:37:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:37:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:37:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:37:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2021-05-02 23:37:19,011 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:37:19,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410139846] [2021-05-02 23:37:19,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [410139846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:37:19,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:37:19,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-02 23:37:19,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103714969] [2021-05-02 23:37:19,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 23:37:19,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:37:19,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 23:37:19,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 23:37:19,013 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) [2021-05-02 23:37:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:37:38,218 INFO L93 Difference]: Finished difference Result 604 states and 748 transitions. [2021-05-02 23:37:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 23:37:38,219 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 [2021-05-02 23:37:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:37:38,222 INFO L225 Difference]: With dead ends: 604 [2021-05-02 23:37:38,222 INFO L226 Difference]: Without dead ends: 593 [2021-05-02 23:37:38,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2964.3ms TimeCoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 23:37:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-05-02 23:37:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 306. [2021-05-02 23:37:38,233 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) [2021-05-02 23:37:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 377 transitions. [2021-05-02 23:37:38,234 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 377 transitions. Word has length 573 [2021-05-02 23:37:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:37:38,234 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 377 transitions. [2021-05-02 23:37:38,235 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) [2021-05-02 23:37:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 377 transitions. [2021-05-02 23:37:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-05-02 23:37:38,237 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:37:38,237 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] [2021-05-02 23:37:38,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-02 23:37:38,238 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:37:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:37:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash -502789562, now seen corresponding path program 71 times [2021-05-02 23:37:38,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:37:38,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219028379] [2021-05-02 23:37:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:37:38,245 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:37:38,246 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:37:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:37:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:37:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:37:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:37:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:37:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:37:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:37:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:37:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:37:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:37:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:37:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:37:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:37:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:37:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:37:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:37:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:37:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:37:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:37:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:37:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:37:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:37:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:37:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:37:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:37:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:37:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:37:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:37:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:37:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:37:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:37:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:37:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:37:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:37:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:37:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:37:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:37:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:37:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:37:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:37:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:37:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:37:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:37:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:37:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:37:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:37:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:37:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:37:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:37:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:37:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:37:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:37:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:37:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:37:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:37:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:37:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:37:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:37:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:37:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:37:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:37:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:37:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:37:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:37:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:37:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:37:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:37:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:37:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:37:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:37:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:37:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:37:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:37:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2021-05-02 23:37:41,739 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:37:41,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219028379] [2021-05-02 23:37:41,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1219028379] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:37:41,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:37:41,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-02 23:37:41,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350272480] [2021-05-02 23:37:41,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 23:37:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:37:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 23:37:41,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:37:41,741 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) [2021-05-02 23:38:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:38:01,495 INFO L93 Difference]: Finished difference Result 612 states and 758 transitions. [2021-05-02 23:38:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 23:38:01,497 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 [2021-05-02 23:38:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:38:01,499 INFO L225 Difference]: With dead ends: 612 [2021-05-02 23:38:01,499 INFO L226 Difference]: Without dead ends: 601 [2021-05-02 23:38:01,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3004.1ms TimeCoverageRelationStatistics Valid=218, Invalid=5332, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:38:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-05-02 23:38:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 310. [2021-05-02 23:38:01,509 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) [2021-05-02 23:38:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 382 transitions. [2021-05-02 23:38:01,509 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 382 transitions. Word has length 581 [2021-05-02 23:38:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:38:01,510 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 382 transitions. [2021-05-02 23:38:01,510 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) [2021-05-02 23:38:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 382 transitions. [2021-05-02 23:38:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2021-05-02 23:38:01,512 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:38:01,513 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] [2021-05-02 23:38:01,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-02 23:38:01,513 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:38:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:38:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash -247159647, now seen corresponding path program 72 times [2021-05-02 23:38:01,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:38:01,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519173921] [2021-05-02 23:38:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:38:01,523 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:38:01,525 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:38:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:38:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:38:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:38:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:38:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:38:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:38:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:38:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:38:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:38:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:38:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:38:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:38:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:38:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:38:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:38:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:38:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:38:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:38:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:38:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:38:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:38:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:38:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:38:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:38:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:38:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:38:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:38:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:38:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:38:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:38:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:38:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:38:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:38:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:38:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:38:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:38:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:38:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:38:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:38:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:38:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:38:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:38:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:38:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:38:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:38:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:38:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:38:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:38:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:38:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:38:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:38:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:38:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:38:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:38:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:38:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:38:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:38:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:38:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:38:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:38:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:38:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:38:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:38:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:38:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:38:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:38:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:38:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:38:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:38:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:38:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:38:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:38:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:38:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2021-05-02 23:38:05,280 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:38:05,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519173921] [2021-05-02 23:38:05,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519173921] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:38:05,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:38:05,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-02 23:38:05,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540309393] [2021-05-02 23:38:05,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 23:38:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:38:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 23:38:05,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 23:38:05,282 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) [2021-05-02 23:38:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:38:26,008 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2021-05-02 23:38:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 23:38:26,010 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 [2021-05-02 23:38:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:38:26,013 INFO L225 Difference]: With dead ends: 620 [2021-05-02 23:38:26,013 INFO L226 Difference]: Without dead ends: 609 [2021-05-02 23:38:26,014 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3170.4ms TimeCoverageRelationStatistics Valid=221, Invalid=5479, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 23:38:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-05-02 23:38:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 314. [2021-05-02 23:38:26,025 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) [2021-05-02 23:38:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 387 transitions. [2021-05-02 23:38:26,026 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 387 transitions. Word has length 589 [2021-05-02 23:38:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:38:26,026 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 387 transitions. [2021-05-02 23:38:26,026 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) [2021-05-02 23:38:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 387 transitions. [2021-05-02 23:38:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-05-02 23:38:26,029 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:38:26,030 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] [2021-05-02 23:38:26,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-02 23:38:26,030 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:38:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:38:26,030 INFO L82 PathProgramCache]: Analyzing trace with hash -476400644, now seen corresponding path program 73 times [2021-05-02 23:38:26,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:38:26,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627580809] [2021-05-02 23:38:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:38:26,039 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:38:26,041 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:38:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:38:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:38:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:38:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:38:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:38:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:38:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:38:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:38:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:38:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:38:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:38:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:38:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:38:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:38:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:38:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:38:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:38:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:38:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:38:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:38:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:38:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:38:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:38:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:38:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:38:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:38:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:38:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:38:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:38:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:38:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:38:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:38:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:38:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:38:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:38:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:38:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:38:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:38:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:38:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:38:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:38:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:38:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:38:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:38:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:38:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:38:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:38:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:38:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:38:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:38:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:38:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:38:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:38:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:38:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:38:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:38:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:38:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:38:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:38:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:38:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:38:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:38:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:38:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:38:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:38:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:38:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:38:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:38:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:38:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:38:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:38:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:38:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:30,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:38:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:38:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2021-05-02 23:38:30,027 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:38:30,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627580809] [2021-05-02 23:38:30,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1627580809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:38:30,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:38:30,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-02 23:38:30,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109523989] [2021-05-02 23:38:30,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 23:38:30,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:38:30,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 23:38:30,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:38:30,029 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) [2021-05-02 23:38:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:38:51,997 INFO L93 Difference]: Finished difference Result 628 states and 778 transitions. [2021-05-02 23:38:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 23:38:51,999 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 [2021-05-02 23:38:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:38:52,002 INFO L225 Difference]: With dead ends: 628 [2021-05-02 23:38:52,002 INFO L226 Difference]: Without dead ends: 617 [2021-05-02 23:38:52,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3387.2ms TimeCoverageRelationStatistics Valid=224, Invalid=5628, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:38:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-05-02 23:38:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 318. [2021-05-02 23:38:52,015 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) [2021-05-02 23:38:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2021-05-02 23:38:52,016 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 597 [2021-05-02 23:38:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:38:52,017 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2021-05-02 23:38:52,017 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) [2021-05-02 23:38:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2021-05-02 23:38:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2021-05-02 23:38:52,020 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:38:52,021 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] [2021-05-02 23:38:52,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-02 23:38:52,021 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:38:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:38:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash -691718057, now seen corresponding path program 74 times [2021-05-02 23:38:52,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:38:52,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340214142] [2021-05-02 23:38:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:38:52,037 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:38:52,038 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:38:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:38:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:38:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:38:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:38:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:38:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:38:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:38:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:38:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:38:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:38:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:38:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:38:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:38:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:38:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:38:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:38:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:38:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:38:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:38:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:38:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:38:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:38:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:38:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:38:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:38:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:38:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:38:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:38:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:38:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:38:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:38:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:38:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:38:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:38:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:38:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:38:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:38:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:38:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:38:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:38:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:38:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:38:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:38:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:38:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:38:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:38:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:38:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:38:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:38:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:38:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:38:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:38:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:38:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:38:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:38:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:38:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:38:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:38:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:38:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:38:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:38:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:38:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:38:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:38:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:38:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:38:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:38:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:38:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:38:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:38:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:38:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:38:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:38:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:38:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:38:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:38:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2021-05-02 23:38:56,096 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:38:56,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340214142] [2021-05-02 23:38:56,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [340214142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:38:56,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:38:56,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-02 23:38:56,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506983736] [2021-05-02 23:38:56,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 23:38:56,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:38:56,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 23:38:56,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 23:38:56,098 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) [2021-05-02 23:39:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:39:19,106 INFO L93 Difference]: Finished difference Result 636 states and 788 transitions. [2021-05-02 23:39:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 23:39:19,109 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 [2021-05-02 23:39:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:39:19,112 INFO L225 Difference]: With dead ends: 636 [2021-05-02 23:39:19,112 INFO L226 Difference]: Without dead ends: 625 [2021-05-02 23:39:19,112 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3440.8ms TimeCoverageRelationStatistics Valid=227, Invalid=5779, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 23:39:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-05-02 23:39:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 322. [2021-05-02 23:39:19,124 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) [2021-05-02 23:39:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 397 transitions. [2021-05-02 23:39:19,125 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 397 transitions. Word has length 605 [2021-05-02 23:39:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:39:19,125 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 397 transitions. [2021-05-02 23:39:19,125 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) [2021-05-02 23:39:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 397 transitions. [2021-05-02 23:39:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-05-02 23:39:19,128 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:39:19,129 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] [2021-05-02 23:39:19,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-02 23:39:19,129 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:39:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:39:19,129 INFO L82 PathProgramCache]: Analyzing trace with hash -41995854, now seen corresponding path program 75 times [2021-05-02 23:39:19,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:39:19,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934811887] [2021-05-02 23:39:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:39:19,142 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:39:19,145 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:39:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:39:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:39:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:39:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:39:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:39:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:39:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:39:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:39:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:39:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:39:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:39:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:39:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:39:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:39:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:39:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:39:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:39:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:39:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:39:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:39:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:39:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:39:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:39:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:39:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:39:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:39:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:39:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:39:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:39:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:39:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:39:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:39:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:39:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:39:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:39:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:39:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:39:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:39:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:39:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:39:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:39:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:39:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:39:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:39:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:39:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:39:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:39:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:39:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:39:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:39:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:39:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:39:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:39:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:39:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:39:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:39:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:39:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:39:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:39:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:39:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:39:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:39:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:39:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:39:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:39:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:39:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:39:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:39:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:39:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:39:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:39:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:39:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:39:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:39:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:39:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:39:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2021-05-02 23:39:23,464 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:39:23,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934811887] [2021-05-02 23:39:23,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934811887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:39:23,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:39:23,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-02 23:39:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815321044] [2021-05-02 23:39:23,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 23:39:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:39:23,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 23:39:23,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 23:39:23,466 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) [2021-05-02 23:39:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:39:47,517 INFO L93 Difference]: Finished difference Result 644 states and 798 transitions. [2021-05-02 23:39:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 23:39:47,520 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 [2021-05-02 23:39:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:39:47,523 INFO L225 Difference]: With dead ends: 644 [2021-05-02 23:39:47,523 INFO L226 Difference]: Without dead ends: 633 [2021-05-02 23:39:47,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3748.4ms TimeCoverageRelationStatistics Valid=230, Invalid=5932, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 23:39:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-05-02 23:39:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 326. [2021-05-02 23:39:47,536 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) [2021-05-02 23:39:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 402 transitions. [2021-05-02 23:39:47,537 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 402 transitions. Word has length 613 [2021-05-02 23:39:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:39:47,537 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 402 transitions. [2021-05-02 23:39:47,538 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) [2021-05-02 23:39:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 402 transitions. [2021-05-02 23:39:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2021-05-02 23:39:47,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:39:47,541 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] [2021-05-02 23:39:47,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-02 23:39:47,541 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:39:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:39:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1618763763, now seen corresponding path program 76 times [2021-05-02 23:39:47,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:39:47,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292201983] [2021-05-02 23:39:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:39:47,551 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:39:47,552 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:39:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:39:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:39:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:39:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:39:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:39:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:39:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:39:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:39:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:39:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:39:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:39:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:39:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:39:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:39:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:39:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:39:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:39:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:39:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:39:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:39:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:39:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:39:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:39:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:39:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:39:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:39:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:39:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:39:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:39:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:39:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:39:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:39:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:39:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:39:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:39:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:39:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:39:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:39:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:39:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:39:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:39:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:39:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:39:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:39:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:39:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:39:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:39:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:39:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:39:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:39:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:39:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:39:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:39:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:39:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:39:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:39:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:39:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:39:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:39:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:39:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:39:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:39:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:39:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:39:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:39:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:39:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:39:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:39:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:39:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:39:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:39:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:39:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:39:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:39:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:39:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:39:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-02 23:39:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:39:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2021-05-02 23:39:52,273 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:39:52,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292201983] [2021-05-02 23:39:52,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [292201983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:39:52,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:39:52,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-02 23:39:52,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080248247] [2021-05-02 23:39:52,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 23:39:52,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:39:52,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 23:39:52,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 23:39:52,275 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) [2021-05-02 23:40:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:40:19,818 INFO L93 Difference]: Finished difference Result 652 states and 808 transitions. [2021-05-02 23:40:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 23:40:19,821 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 [2021-05-02 23:40:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:40:19,824 INFO L225 Difference]: With dead ends: 652 [2021-05-02 23:40:19,824 INFO L226 Difference]: Without dead ends: 641 [2021-05-02 23:40:19,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4038.8ms TimeCoverageRelationStatistics Valid=233, Invalid=6087, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 23:40:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-05-02 23:40:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 330. [2021-05-02 23:40:19,846 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) [2021-05-02 23:40:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 407 transitions. [2021-05-02 23:40:19,847 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 407 transitions. Word has length 621 [2021-05-02 23:40:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:40:19,848 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 407 transitions. [2021-05-02 23:40:19,848 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) [2021-05-02 23:40:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 407 transitions. [2021-05-02 23:40:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2021-05-02 23:40:19,851 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:40:19,851 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] [2021-05-02 23:40:19,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-02 23:40:19,851 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:40:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:40:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash 428704616, now seen corresponding path program 77 times [2021-05-02 23:40:19,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:40:19,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135248352] [2021-05-02 23:40:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:40:19,860 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:40:19,862 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:40:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:40:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:40:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:40:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:40:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:40:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:40:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:40:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:40:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:40:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:40:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:40:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:40:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:40:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:40:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:40:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:40:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:40:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:40:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:40:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:40:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:40:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:40:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:40:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:40:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:40:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:40:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:40:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:40:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:40:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:40:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:40:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:40:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:40:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:40:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:40:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:40:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:40:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:40:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:40:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:40:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:40:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:40:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:40:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:40:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:40:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:40:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:40:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:40:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:40:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:40:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:40:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:40:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:40:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:40:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:40:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:40:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:40:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:40:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:40:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:40:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:40:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:40:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:40:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:40:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:40:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:40:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:40:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:40:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:40:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:40:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:40:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:40:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:40:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:40:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:40:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:40:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-02 23:40:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-02 23:40:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2021-05-02 23:40:24,827 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:40:24,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135248352] [2021-05-02 23:40:24,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [135248352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:40:24,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:40:24,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-02 23:40:24,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089473970] [2021-05-02 23:40:24,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 23:40:24,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:40:24,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 23:40:24,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:40:24,832 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) [2021-05-02 23:40:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:40:53,597 INFO L93 Difference]: Finished difference Result 660 states and 818 transitions. [2021-05-02 23:40:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 23:40:53,599 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 [2021-05-02 23:40:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:40:53,602 INFO L225 Difference]: With dead ends: 660 [2021-05-02 23:40:53,602 INFO L226 Difference]: Without dead ends: 649 [2021-05-02 23:40:53,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4289.3ms TimeCoverageRelationStatistics Valid=236, Invalid=6244, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:40:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-05-02 23:40:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 334. [2021-05-02 23:40:53,615 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) [2021-05-02 23:40:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 412 transitions. [2021-05-02 23:40:53,616 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 412 transitions. Word has length 629 [2021-05-02 23:40:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:40:53,617 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 412 transitions. [2021-05-02 23:40:53,617 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) [2021-05-02 23:40:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 412 transitions. [2021-05-02 23:40:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-05-02 23:40:53,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:40:53,621 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] [2021-05-02 23:40:53,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-02 23:40:53,621 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:40:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:40:53,621 INFO L82 PathProgramCache]: Analyzing trace with hash -581444669, now seen corresponding path program 78 times [2021-05-02 23:40:53,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:40:53,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558564396] [2021-05-02 23:40:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:40:53,631 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:40:53,632 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:40:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:40:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:40:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:40:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:40:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:40:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:40:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:40:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:40:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:40:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:40:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:40:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:40:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:40:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:40:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:40:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:40:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:40:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:40:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:40:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:40:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:40:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:40:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:40:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:40:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:40:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:40:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:40:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:40:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:40:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:40:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:40:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:40:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:40:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:40:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:40:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:40:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:40:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:40:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:40:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:40:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:40:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:40:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:40:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:40:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:40:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:40:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:40:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:40:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:40:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:40:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:40:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:40:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:40:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:40:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:40:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:40:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:40:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:40:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:40:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:40:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:40:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:40:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:40:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:40:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:40:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:40:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:40:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:40:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:40:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:40:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:40:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:40:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:40:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:40:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:40:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:40:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-02 23:40:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-02 23:40:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-02 23:40:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:40:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2021-05-02 23:40:58,819 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:40:58,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558564396] [2021-05-02 23:40:58,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [558564396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:40:58,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:40:58,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-02 23:40:58,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370427887] [2021-05-02 23:40:58,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 23:40:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:40:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 23:40:58,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 23:40:58,822 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) [2021-05-02 23:41:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:41:29,216 INFO L93 Difference]: Finished difference Result 668 states and 828 transitions. [2021-05-02 23:41:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 23:41:29,219 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 [2021-05-02 23:41:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:41:29,221 INFO L225 Difference]: With dead ends: 668 [2021-05-02 23:41:29,221 INFO L226 Difference]: Without dead ends: 657 [2021-05-02 23:41:29,222 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4440.7ms TimeCoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 23:41:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-05-02 23:41:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 338. [2021-05-02 23:41:29,233 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) [2021-05-02 23:41:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 417 transitions. [2021-05-02 23:41:29,234 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 417 transitions. Word has length 637 [2021-05-02 23:41:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:41:29,235 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 417 transitions. [2021-05-02 23:41:29,235 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) [2021-05-02 23:41:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 417 transitions. [2021-05-02 23:41:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2021-05-02 23:41:29,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:41:29,238 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] [2021-05-02 23:41:29,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-02 23:41:29,238 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:41:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:41:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1906157854, now seen corresponding path program 79 times [2021-05-02 23:41:29,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:41:29,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321755910] [2021-05-02 23:41:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:41:29,247 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:41:29,249 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:41:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:41:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:41:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:41:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:41:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:41:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:41:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:41:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:41:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:41:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:41:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:41:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:41:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:41:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:41:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:41:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:41:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:41:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:41:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:41:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:41:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:41:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:41:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:41:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:41:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:41:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:41:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:41:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:41:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:41:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:41:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:41:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:41:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:41:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:41:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:41:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:41:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:41:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:41:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:41:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:41:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:41:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:41:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:41:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:41:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:41:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:41:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:41:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:41:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:41:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:41:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:41:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:41:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:41:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:41:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:41:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:41:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:41:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:41:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:41:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:41:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:41:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:41:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:41:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:41:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:41:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:41:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:41:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:41:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:41:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:41:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:41:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:41:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:41:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:41:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:41:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:41:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-02 23:41:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-02 23:41:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-02 23:41:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-02 23:41:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:41:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2021-05-02 23:41:34,791 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:41:34,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321755910] [2021-05-02 23:41:34,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [321755910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:41:34,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:41:34,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-02 23:41:34,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449546489] [2021-05-02 23:41:34,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 23:41:34,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:41:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 23:41:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 23:41:34,793 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) [2021-05-02 23:42:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:42:07,299 INFO L93 Difference]: Finished difference Result 676 states and 838 transitions. [2021-05-02 23:42:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 23:42:07,302 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 [2021-05-02 23:42:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:42:07,305 INFO L225 Difference]: With dead ends: 676 [2021-05-02 23:42:07,305 INFO L226 Difference]: Without dead ends: 665 [2021-05-02 23:42:07,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4836.8ms TimeCoverageRelationStatistics Valid=242, Invalid=6564, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 23:42:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-05-02 23:42:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 342. [2021-05-02 23:42:07,319 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) [2021-05-02 23:42:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 422 transitions. [2021-05-02 23:42:07,320 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 422 transitions. Word has length 645 [2021-05-02 23:42:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:42:07,320 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 422 transitions. [2021-05-02 23:42:07,321 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) [2021-05-02 23:42:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 422 transitions. [2021-05-02 23:42:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-05-02 23:42:07,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:42:07,324 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] [2021-05-02 23:42:07,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-02 23:42:07,325 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:42:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:42:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1914301305, now seen corresponding path program 80 times [2021-05-02 23:42:07,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:42:07,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54636461] [2021-05-02 23:42:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:42:07,334 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:42:07,336 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:42:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:42:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 23:42:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 23:42:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-02 23:42:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 23:42:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 23:42:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 23:42:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 23:42:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-05-02 23:42:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-05-02 23:42:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 23:42:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-05-02 23:42:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-05-02 23:42:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 23:42:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-05-02 23:42:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-05-02 23:42:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 23:42:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-05-02 23:42:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-05-02 23:42:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 23:42:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-05-02 23:42:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-05-02 23:42:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 23:42:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-05-02 23:42:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-05-02 23:42:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 23:42:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-05-02 23:42:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-05-02 23:42:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 23:42:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-05-02 23:42:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-05-02 23:42:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 23:42:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-05-02 23:42:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-05-02 23:42:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 23:42:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-05-02 23:42:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-05-02 23:42:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-05-02 23:42:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-05-02 23:42:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-05-02 23:42:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-05-02 23:42:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-05-02 23:42:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-05-02 23:42:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-05-02 23:42:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-05-02 23:42:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-05-02 23:42:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-05-02 23:42:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-05-02 23:42:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-05-02 23:42:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-05-02 23:42:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-05-02 23:42:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-05-02 23:42:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-05-02 23:42:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2021-05-02 23:42:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-05-02 23:42:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-05-02 23:42:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-05-02 23:42:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-05-02 23:42:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-05-02 23:42:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-05-02 23:42:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-05-02 23:42:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-05-02 23:42:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-05-02 23:42:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-05-02 23:42:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2021-05-02 23:42:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-05-02 23:42:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-05-02 23:42:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-05-02 23:42:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2021-05-02 23:42:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2021-05-02 23:42:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-05-02 23:42:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2021-05-02 23:42:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-05-02 23:42:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2021-05-02 23:42:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2021-05-02 23:42:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2021-05-02 23:42:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-05-02 23:42:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2021-05-02 23:42:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2021-05-02 23:42:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2021-05-02 23:42:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2021-05-02 23:42:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:42:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2021-05-02 23:42:13,450 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:42:13,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54636461] [2021-05-02 23:42:13,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [54636461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:42:13,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:42:13,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-02 23:42:13,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257955827] [2021-05-02 23:42:13,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 23:42:13,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:42:13,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 23:42:13,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=6727, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 23:42:13,452 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)