/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:42:37,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:42:37,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:42:37,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 19:42:37,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:42:37,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:42:37,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:42:37,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:42:37,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:42:37,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:42:37,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:42:37,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:42:37,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:42:37,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:42:37,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:42:37,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:42:37,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:42:37,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:42:37,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:42:37,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:42:37,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:42:37,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:42:37,668 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:42:37,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:42:37,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:42:37,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:42:37,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:42:37,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:42:37,670 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:42:37,671 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:42:37,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:42:37,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:42:37,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:42:37,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:42:37,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:42:37,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:42:37,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:42:37,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:42:37,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:42:37,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:42:37,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:42:37,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:42:37,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:42:38,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:42:38,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:42:38,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:42:38,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:42:38,091 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:42:38,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2020-12-22 19:42:38,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c073e2a96/3b01de4096674d31a8f273eedfee13f3/FLAG27170a925 [2020-12-22 19:42:38,784 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:42:38,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2020-12-22 19:42:38,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c073e2a96/3b01de4096674d31a8f273eedfee13f3/FLAG27170a925 [2020-12-22 19:42:39,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c073e2a96/3b01de4096674d31a8f273eedfee13f3 [2020-12-22 19:42:39,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:42:39,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:42:39,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:39,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:42:39,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:42:39,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532dadcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39, skipping insertion in model container [2020-12-22 19:42:39,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:42:39,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:42:39,524 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c[4936,4949] [2020-12-22 19:42:39,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:39,539 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:42:39,573 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c[4936,4949] [2020-12-22 19:42:39,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:39,592 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:42:39,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39 WrapperNode [2020-12-22 19:42:39,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:39,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:39,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:42:39,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:42:39,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:39,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:42:39,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:42:39,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:42:39,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (1/1) ... [2020-12-22 19:42:39,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:42:39,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:42:39,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:42:39,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:42:39,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (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 [2020-12-22 19:42:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:42:39,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:42:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:42:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:42:40,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:42:40,635 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-22 19:42:40,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:40 BoogieIcfgContainer [2020-12-22 19:42:40,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:42:40,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:42:40,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:42:40,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:42:40,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:39" (1/3) ... [2020-12-22 19:42:40,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f193455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:40, skipping insertion in model container [2020-12-22 19:42:40,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:39" (2/3) ... [2020-12-22 19:42:40,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f193455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:40, skipping insertion in model container [2020-12-22 19:42:40,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:40" (3/3) ... [2020-12-22 19:42:40,646 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-12-22 19:42:40,653 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:42:40,658 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 19:42:40,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 19:42:40,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:42:40,704 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:42:40,704 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:42:40,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:42:40,705 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:42:40,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:42:40,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:42:40,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:42:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 19:42:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:42:40,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:42:40,731 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash 28705099, now seen corresponding path program 1 times [2020-12-22 19:42:40,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71284109] [2020-12-22 19:42:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71284109] [2020-12-22 19:42:40,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:40,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936047898] [2020-12-22 19:42:40,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:42:40,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:42:40,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:40,947 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-22 19:42:40,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,970 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2020-12-22 19:42:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:42:40,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-22 19:42:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,982 INFO L225 Difference]: With dead ends: 50 [2020-12-22 19:42:40,983 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 19:42:40,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 19:42:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 19:42:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 19:42:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 86 transitions. [2020-12-22 19:42:41,027 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 86 transitions. Word has length 5 [2020-12-22 19:42:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,028 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 86 transitions. [2020-12-22 19:42:41,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:42:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 86 transitions. [2020-12-22 19:42:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:42:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:42:41,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 889699595, now seen corresponding path program 1 times [2020-12-22 19:42:41,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422229272] [2020-12-22 19:42:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422229272] [2020-12-22 19:42:41,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:41,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918914277] [2020-12-22 19:42:41,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,098 INFO L87 Difference]: Start difference. First operand 48 states and 86 transitions. Second operand 3 states. [2020-12-22 19:42:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,114 INFO L93 Difference]: Finished difference Result 47 states and 85 transitions. [2020-12-22 19:42:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:42:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,118 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:42:41,118 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:42:41,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:42:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 19:42:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:42:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 83 transitions. [2020-12-22 19:42:41,126 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 83 transitions. Word has length 6 [2020-12-22 19:42:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,127 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 83 transitions. [2020-12-22 19:42:41,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 83 transitions. [2020-12-22 19:42:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:41,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:42:41,129 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1359894467, now seen corresponding path program 1 times [2020-12-22 19:42:41,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029744235] [2020-12-22 19:42:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029744235] [2020-12-22 19:42:41,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785446508] [2020-12-22 19:42:41,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,241 INFO L87 Difference]: Start difference. First operand 45 states and 83 transitions. Second operand 3 states. [2020-12-22 19:42:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,284 INFO L93 Difference]: Finished difference Result 87 states and 161 transitions. [2020-12-22 19:42:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,287 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:42:41,288 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:42:41,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:42:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2020-12-22 19:42:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-22 19:42:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 110 transitions. [2020-12-22 19:42:41,298 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 110 transitions. Word has length 20 [2020-12-22 19:42:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,299 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 110 transitions. [2020-12-22 19:42:41,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 110 transitions. [2020-12-22 19:42:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:41,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:42:41,301 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1914004475, now seen corresponding path program 1 times [2020-12-22 19:42:41,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480151959] [2020-12-22 19:42:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480151959] [2020-12-22 19:42:41,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807142046] [2020-12-22 19:42:41,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,359 INFO L87 Difference]: Start difference. First operand 59 states and 110 transitions. Second operand 3 states. [2020-12-22 19:42:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,380 INFO L93 Difference]: Finished difference Result 87 states and 159 transitions. [2020-12-22 19:42:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,382 INFO L225 Difference]: With dead ends: 87 [2020-12-22 19:42:41,383 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 19:42:41,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 19:42:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-12-22 19:42:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 19:42:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 158 transitions. [2020-12-22 19:42:41,394 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 158 transitions. Word has length 20 [2020-12-22 19:42:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,395 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 158 transitions. [2020-12-22 19:42:41,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 158 transitions. [2020-12-22 19:42:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:41,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:42:41,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 793156859, now seen corresponding path program 1 times [2020-12-22 19:42:41,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068594734] [2020-12-22 19:42:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068594734] [2020-12-22 19:42:41,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131147810] [2020-12-22 19:42:41,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,460 INFO L87 Difference]: Start difference. First operand 85 states and 158 transitions. Second operand 3 states. [2020-12-22 19:42:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,479 INFO L93 Difference]: Finished difference Result 90 states and 161 transitions. [2020-12-22 19:42:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,482 INFO L225 Difference]: With dead ends: 90 [2020-12-22 19:42:41,482 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 19:42:41,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 19:42:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-12-22 19:42:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:42:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 160 transitions. [2020-12-22 19:42:41,492 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 160 transitions. Word has length 21 [2020-12-22 19:42:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,492 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 160 transitions. [2020-12-22 19:42:41,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 160 transitions. [2020-12-22 19:42:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:41,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:42:41,496 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -795191043, now seen corresponding path program 1 times [2020-12-22 19:42:41,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041910927] [2020-12-22 19:42:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041910927] [2020-12-22 19:42:41,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397907057] [2020-12-22 19:42:41,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,545 INFO L87 Difference]: Start difference. First operand 88 states and 160 transitions. Second operand 3 states. [2020-12-22 19:42:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,574 INFO L93 Difference]: Finished difference Result 167 states and 306 transitions. [2020-12-22 19:42:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,577 INFO L225 Difference]: With dead ends: 167 [2020-12-22 19:42:41,577 INFO L226 Difference]: Without dead ends: 167 [2020-12-22 19:42:41,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-12-22 19:42:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2020-12-22 19:42:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-22 19:42:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 213 transitions. [2020-12-22 19:42:41,605 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 213 transitions. Word has length 21 [2020-12-22 19:42:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,605 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 213 transitions. [2020-12-22 19:42:41,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,606 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 213 transitions. [2020-12-22 19:42:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:41,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:42:41,612 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1816259397, now seen corresponding path program 1 times [2020-12-22 19:42:41,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843431507] [2020-12-22 19:42:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843431507] [2020-12-22 19:42:41,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67102580] [2020-12-22 19:42:41,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,708 INFO L87 Difference]: Start difference. First operand 117 states and 213 transitions. Second operand 3 states. [2020-12-22 19:42:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,743 INFO L93 Difference]: Finished difference Result 169 states and 304 transitions. [2020-12-22 19:42:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,745 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:42:41,746 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:42:41,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:42:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-12-22 19:42:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-12-22 19:42:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 303 transitions. [2020-12-22 19:42:41,775 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 303 transitions. Word has length 21 [2020-12-22 19:42:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,776 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 303 transitions. [2020-12-22 19:42:41,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 303 transitions. [2020-12-22 19:42:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:41,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:42:41,778 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1119094160, now seen corresponding path program 1 times [2020-12-22 19:42:41,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239445491] [2020-12-22 19:42:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239445491] [2020-12-22 19:42:41,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123381313] [2020-12-22 19:42:41,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,871 INFO L87 Difference]: Start difference. First operand 167 states and 303 transitions. Second operand 3 states. [2020-12-22 19:42:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,911 INFO L93 Difference]: Finished difference Result 171 states and 304 transitions. [2020-12-22 19:42:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,915 INFO L225 Difference]: With dead ends: 171 [2020-12-22 19:42:41,915 INFO L226 Difference]: Without dead ends: 171 [2020-12-22 19:42:41,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-22 19:42:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-12-22 19:42:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-22 19:42:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 303 transitions. [2020-12-22 19:42:41,940 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 303 transitions. Word has length 22 [2020-12-22 19:42:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,942 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 303 transitions. [2020-12-22 19:42:41,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 303 transitions. [2020-12-22 19:42:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:41,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:42:41,946 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,946 INFO L82 PathProgramCache]: Analyzing trace with hash -469253742, now seen corresponding path program 1 times [2020-12-22 19:42:41,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669705790] [2020-12-22 19:42:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669705790] [2020-12-22 19:42:42,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033955684] [2020-12-22 19:42:42,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,002 INFO L87 Difference]: Start difference. First operand 169 states and 303 transitions. Second operand 3 states. [2020-12-22 19:42:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,019 INFO L93 Difference]: Finished difference Result 327 states and 580 transitions. [2020-12-22 19:42:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,022 INFO L225 Difference]: With dead ends: 327 [2020-12-22 19:42:42,022 INFO L226 Difference]: Without dead ends: 327 [2020-12-22 19:42:42,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-22 19:42:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2020-12-22 19:42:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-22 19:42:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 579 transitions. [2020-12-22 19:42:42,036 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 579 transitions. Word has length 22 [2020-12-22 19:42:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,037 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 579 transitions. [2020-12-22 19:42:42,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 579 transitions. [2020-12-22 19:42:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:42,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:42:42,040 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 551814612, now seen corresponding path program 1 times [2020-12-22 19:42:42,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917028986] [2020-12-22 19:42:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917028986] [2020-12-22 19:42:42,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392395041] [2020-12-22 19:42:42,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,079 INFO L87 Difference]: Start difference. First operand 325 states and 579 transitions. Second operand 3 states. [2020-12-22 19:42:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,092 INFO L93 Difference]: Finished difference Result 415 states and 744 transitions. [2020-12-22 19:42:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,096 INFO L225 Difference]: With dead ends: 415 [2020-12-22 19:42:42,096 INFO L226 Difference]: Without dead ends: 415 [2020-12-22 19:42:42,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-12-22 19:42:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 325. [2020-12-22 19:42:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-22 19:42:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 575 transitions. [2020-12-22 19:42:42,111 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 575 transitions. Word has length 22 [2020-12-22 19:42:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,112 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 575 transitions. [2020-12-22 19:42:42,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 575 transitions. [2020-12-22 19:42:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:42,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:42:42,115 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1661751056, now seen corresponding path program 1 times [2020-12-22 19:42:42,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508626852] [2020-12-22 19:42:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508626852] [2020-12-22 19:42:42,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215999223] [2020-12-22 19:42:42,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,157 INFO L87 Difference]: Start difference. First operand 325 states and 575 transitions. Second operand 3 states. [2020-12-22 19:42:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,181 INFO L93 Difference]: Finished difference Result 611 states and 1088 transitions. [2020-12-22 19:42:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,185 INFO L225 Difference]: With dead ends: 611 [2020-12-22 19:42:42,186 INFO L226 Difference]: Without dead ends: 611 [2020-12-22 19:42:42,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-22 19:42:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 449. [2020-12-22 19:42:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-12-22 19:42:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 783 transitions. [2020-12-22 19:42:42,202 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 783 transitions. Word has length 23 [2020-12-22 19:42:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,203 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 783 transitions. [2020-12-22 19:42:42,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 783 transitions. [2020-12-22 19:42:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:42,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:42:42,207 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1612147886, now seen corresponding path program 1 times [2020-12-22 19:42:42,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121691686] [2020-12-22 19:42:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121691686] [2020-12-22 19:42:42,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908949972] [2020-12-22 19:42:42,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,283 INFO L87 Difference]: Start difference. First operand 449 states and 783 transitions. Second operand 3 states. [2020-12-22 19:42:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,305 INFO L93 Difference]: Finished difference Result 635 states and 1100 transitions. [2020-12-22 19:42:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,310 INFO L225 Difference]: With dead ends: 635 [2020-12-22 19:42:42,310 INFO L226 Difference]: Without dead ends: 635 [2020-12-22 19:42:42,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-12-22 19:42:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2020-12-22 19:42:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-12-22 19:42:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1099 transitions. [2020-12-22 19:42:42,331 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1099 transitions. Word has length 23 [2020-12-22 19:42:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,332 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1099 transitions. [2020-12-22 19:42:42,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1099 transitions. [2020-12-22 19:42:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:42,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:42:42,334 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash 25538215, now seen corresponding path program 1 times [2020-12-22 19:42:42,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308605032] [2020-12-22 19:42:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308605032] [2020-12-22 19:42:42,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516261334] [2020-12-22 19:42:42,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,411 INFO L87 Difference]: Start difference. First operand 633 states and 1099 transitions. Second operand 3 states. [2020-12-22 19:42:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,427 INFO L93 Difference]: Finished difference Result 647 states and 1108 transitions. [2020-12-22 19:42:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,432 INFO L225 Difference]: With dead ends: 647 [2020-12-22 19:42:42,432 INFO L226 Difference]: Without dead ends: 647 [2020-12-22 19:42:42,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-12-22 19:42:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2020-12-22 19:42:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-12-22 19:42:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1107 transitions. [2020-12-22 19:42:42,450 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1107 transitions. Word has length 24 [2020-12-22 19:42:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,451 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 1107 transitions. [2020-12-22 19:42:42,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1107 transitions. [2020-12-22 19:42:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:42,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:42:42,453 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1562809687, now seen corresponding path program 1 times [2020-12-22 19:42:42,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966909537] [2020-12-22 19:42:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966909537] [2020-12-22 19:42:42,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477546038] [2020-12-22 19:42:42,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,484 INFO L87 Difference]: Start difference. First operand 645 states and 1107 transitions. Second operand 3 states. [2020-12-22 19:42:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,503 INFO L93 Difference]: Finished difference Result 1191 states and 2060 transitions. [2020-12-22 19:42:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,510 INFO L225 Difference]: With dead ends: 1191 [2020-12-22 19:42:42,510 INFO L226 Difference]: Without dead ends: 1191 [2020-12-22 19:42:42,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2020-12-22 19:42:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 901. [2020-12-22 19:42:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-22 19:42:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1515 transitions. [2020-12-22 19:42:42,536 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1515 transitions. Word has length 24 [2020-12-22 19:42:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,536 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1515 transitions. [2020-12-22 19:42:42,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1515 transitions. [2020-12-22 19:42:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:42:42,539 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1711089255, now seen corresponding path program 1 times [2020-12-22 19:42:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38930323] [2020-12-22 19:42:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38930323] [2020-12-22 19:42:42,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708853313] [2020-12-22 19:42:42,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,586 INFO L87 Difference]: Start difference. First operand 901 states and 1515 transitions. Second operand 3 states. [2020-12-22 19:42:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,615 INFO L93 Difference]: Finished difference Result 1255 states and 2100 transitions. [2020-12-22 19:42:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,623 INFO L225 Difference]: With dead ends: 1255 [2020-12-22 19:42:42,623 INFO L226 Difference]: Without dead ends: 1255 [2020-12-22 19:42:42,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-12-22 19:42:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1253. [2020-12-22 19:42:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-12-22 19:42:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2099 transitions. [2020-12-22 19:42:42,682 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2099 transitions. Word has length 24 [2020-12-22 19:42:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,683 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 2099 transitions. [2020-12-22 19:42:42,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2099 transitions. [2020-12-22 19:42:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:42,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:42:42,688 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1202246301, now seen corresponding path program 1 times [2020-12-22 19:42:42,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309565253] [2020-12-22 19:42:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309565253] [2020-12-22 19:42:42,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829810009] [2020-12-22 19:42:42,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,740 INFO L87 Difference]: Start difference. First operand 1253 states and 2099 transitions. Second operand 3 states. [2020-12-22 19:42:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,760 INFO L93 Difference]: Finished difference Result 1271 states and 2100 transitions. [2020-12-22 19:42:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,767 INFO L225 Difference]: With dead ends: 1271 [2020-12-22 19:42:42,768 INFO L226 Difference]: Without dead ends: 1271 [2020-12-22 19:42:42,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-12-22 19:42:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2020-12-22 19:42:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-12-22 19:42:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2099 transitions. [2020-12-22 19:42:42,806 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2099 transitions. Word has length 25 [2020-12-22 19:42:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,806 INFO L481 AbstractCegarLoop]: Abstraction has 1269 states and 2099 transitions. [2020-12-22 19:42:42,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2099 transitions. [2020-12-22 19:42:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:42,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:42:42,809 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1504373093, now seen corresponding path program 1 times [2020-12-22 19:42:42,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701054757] [2020-12-22 19:42:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:42,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701054757] [2020-12-22 19:42:42,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578125967] [2020-12-22 19:42:42,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,859 INFO L87 Difference]: Start difference. First operand 1269 states and 2099 transitions. Second operand 3 states. [2020-12-22 19:42:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,888 INFO L93 Difference]: Finished difference Result 2311 states and 3860 transitions. [2020-12-22 19:42:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,900 INFO L225 Difference]: With dead ends: 2311 [2020-12-22 19:42:42,900 INFO L226 Difference]: Without dead ends: 2311 [2020-12-22 19:42:42,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-12-22 19:42:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1797. [2020-12-22 19:42:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-12-22 19:42:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2899 transitions. [2020-12-22 19:42:42,952 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2899 transitions. Word has length 25 [2020-12-22 19:42:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,953 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 2899 transitions. [2020-12-22 19:42:42,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2899 transitions. [2020-12-22 19:42:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:42,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:42:42,957 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,958 INFO L82 PathProgramCache]: Analyzing trace with hash 483304739, now seen corresponding path program 1 times [2020-12-22 19:42:42,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437603157] [2020-12-22 19:42:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437603157] [2020-12-22 19:42:43,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014965856] [2020-12-22 19:42:43,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,012 INFO L87 Difference]: Start difference. First operand 1797 states and 2899 transitions. Second operand 3 states. [2020-12-22 19:42:43,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,055 INFO L93 Difference]: Finished difference Result 2471 states and 3972 transitions. [2020-12-22 19:42:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:43,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,068 INFO L225 Difference]: With dead ends: 2471 [2020-12-22 19:42:43,068 INFO L226 Difference]: Without dead ends: 2471 [2020-12-22 19:42:43,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-12-22 19:42:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2469. [2020-12-22 19:42:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-22 19:42:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3971 transitions. [2020-12-22 19:42:43,132 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3971 transitions. Word has length 25 [2020-12-22 19:42:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,132 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3971 transitions. [2020-12-22 19:42:43,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3971 transitions. [2020-12-22 19:42:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:43,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:42:43,137 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -608860292, now seen corresponding path program 1 times [2020-12-22 19:42:43,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150917492] [2020-12-22 19:42:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150917492] [2020-12-22 19:42:43,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269874986] [2020-12-22 19:42:43,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,176 INFO L87 Difference]: Start difference. First operand 2469 states and 3971 transitions. Second operand 3 states. [2020-12-22 19:42:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,203 INFO L93 Difference]: Finished difference Result 2503 states and 3972 transitions. [2020-12-22 19:42:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,218 INFO L225 Difference]: With dead ends: 2503 [2020-12-22 19:42:43,218 INFO L226 Difference]: Without dead ends: 2503 [2020-12-22 19:42:43,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2020-12-22 19:42:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2501. [2020-12-22 19:42:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-12-22 19:42:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3971 transitions. [2020-12-22 19:42:43,307 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3971 transitions. Word has length 26 [2020-12-22 19:42:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,307 INFO L481 AbstractCegarLoop]: Abstraction has 2501 states and 3971 transitions. [2020-12-22 19:42:43,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3971 transitions. [2020-12-22 19:42:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:43,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:42:43,313 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2097759102, now seen corresponding path program 1 times [2020-12-22 19:42:43,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932587446] [2020-12-22 19:42:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932587446] [2020-12-22 19:42:43,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535141599] [2020-12-22 19:42:43,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,360 INFO L87 Difference]: Start difference. First operand 2501 states and 3971 transitions. Second operand 3 states. [2020-12-22 19:42:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,401 INFO L93 Difference]: Finished difference Result 4487 states and 7204 transitions. [2020-12-22 19:42:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,425 INFO L225 Difference]: With dead ends: 4487 [2020-12-22 19:42:43,426 INFO L226 Difference]: Without dead ends: 4487 [2020-12-22 19:42:43,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-12-22 19:42:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3589. [2020-12-22 19:42:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-12-22 19:42:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5539 transitions. [2020-12-22 19:42:43,531 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5539 transitions. Word has length 26 [2020-12-22 19:42:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,531 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 5539 transitions. [2020-12-22 19:42:43,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5539 transitions. [2020-12-22 19:42:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:42:43,539 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1076690748, now seen corresponding path program 1 times [2020-12-22 19:42:43,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80447066] [2020-12-22 19:42:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80447066] [2020-12-22 19:42:43,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342701626] [2020-12-22 19:42:43,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,584 INFO L87 Difference]: Start difference. First operand 3589 states and 5539 transitions. Second operand 3 states. [2020-12-22 19:42:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,623 INFO L93 Difference]: Finished difference Result 4871 states and 7492 transitions. [2020-12-22 19:42:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,671 INFO L225 Difference]: With dead ends: 4871 [2020-12-22 19:42:43,672 INFO L226 Difference]: Without dead ends: 4871 [2020-12-22 19:42:43,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2020-12-22 19:42:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4869. [2020-12-22 19:42:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4869 states. [2020-12-22 19:42:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 7491 transitions. [2020-12-22 19:42:43,811 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 7491 transitions. Word has length 26 [2020-12-22 19:42:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,811 INFO L481 AbstractCegarLoop]: Abstraction has 4869 states and 7491 transitions. [2020-12-22 19:42:43,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 7491 transitions. [2020-12-22 19:42:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:43,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:42:43,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 606237144, now seen corresponding path program 1 times [2020-12-22 19:42:43,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426848135] [2020-12-22 19:42:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:43,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426848135] [2020-12-22 19:42:43,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159778123] [2020-12-22 19:42:43,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,855 INFO L87 Difference]: Start difference. First operand 4869 states and 7491 transitions. Second operand 3 states. [2020-12-22 19:42:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,884 INFO L93 Difference]: Finished difference Result 4935 states and 7492 transitions. [2020-12-22 19:42:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,896 INFO L225 Difference]: With dead ends: 4935 [2020-12-22 19:42:43,896 INFO L226 Difference]: Without dead ends: 4935 [2020-12-22 19:42:43,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2020-12-22 19:42:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4933. [2020-12-22 19:42:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4933 states. [2020-12-22 19:42:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7491 transitions. [2020-12-22 19:42:43,998 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7491 transitions. Word has length 27 [2020-12-22 19:42:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,999 INFO L481 AbstractCegarLoop]: Abstraction has 4933 states and 7491 transitions. [2020-12-22 19:42:43,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7491 transitions. [2020-12-22 19:42:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:44,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:44,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:44,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:42:44,007 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash -982110758, now seen corresponding path program 1 times [2020-12-22 19:42:44,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:44,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58204385] [2020-12-22 19:42:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:44,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58204385] [2020-12-22 19:42:44,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:44,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:44,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159759398] [2020-12-22 19:42:44,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:44,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:44,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:44,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,059 INFO L87 Difference]: Start difference. First operand 4933 states and 7491 transitions. Second operand 3 states. [2020-12-22 19:42:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,110 INFO L93 Difference]: Finished difference Result 8711 states and 13380 transitions. [2020-12-22 19:42:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,132 INFO L225 Difference]: With dead ends: 8711 [2020-12-22 19:42:44,132 INFO L226 Difference]: Without dead ends: 8711 [2020-12-22 19:42:44,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2020-12-22 19:42:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 7173. [2020-12-22 19:42:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7173 states. [2020-12-22 19:42:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10563 transitions. [2020-12-22 19:42:44,330 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10563 transitions. Word has length 27 [2020-12-22 19:42:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:44,330 INFO L481 AbstractCegarLoop]: Abstraction has 7173 states and 10563 transitions. [2020-12-22 19:42:44,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10563 transitions. [2020-12-22 19:42:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:44,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:44,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:44,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:42:44,342 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2003179112, now seen corresponding path program 1 times [2020-12-22 19:42:44,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:44,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833537781] [2020-12-22 19:42:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:44,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833537781] [2020-12-22 19:42:44,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:44,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:44,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875714193] [2020-12-22 19:42:44,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:44,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:44,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,389 INFO L87 Difference]: Start difference. First operand 7173 states and 10563 transitions. Second operand 3 states. [2020-12-22 19:42:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,433 INFO L93 Difference]: Finished difference Result 9607 states and 14084 transitions. [2020-12-22 19:42:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,455 INFO L225 Difference]: With dead ends: 9607 [2020-12-22 19:42:44,455 INFO L226 Difference]: Without dead ends: 9607 [2020-12-22 19:42:44,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2020-12-22 19:42:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9605. [2020-12-22 19:42:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9605 states. [2020-12-22 19:42:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 14083 transitions. [2020-12-22 19:42:44,727 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 14083 transitions. Word has length 27 [2020-12-22 19:42:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:44,727 INFO L481 AbstractCegarLoop]: Abstraction has 9605 states and 14083 transitions. [2020-12-22 19:42:44,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 14083 transitions. [2020-12-22 19:42:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:44,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:44,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:44,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:42:44,741 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash -380447663, now seen corresponding path program 1 times [2020-12-22 19:42:44,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:44,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345862825] [2020-12-22 19:42:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:44,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345862825] [2020-12-22 19:42:44,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:44,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:44,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618202118] [2020-12-22 19:42:44,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:44,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:44,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:44,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,767 INFO L87 Difference]: Start difference. First operand 9605 states and 14083 transitions. Second operand 3 states. [2020-12-22 19:42:44,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,808 INFO L93 Difference]: Finished difference Result 9735 states and 14084 transitions. [2020-12-22 19:42:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,833 INFO L225 Difference]: With dead ends: 9735 [2020-12-22 19:42:44,834 INFO L226 Difference]: Without dead ends: 9735 [2020-12-22 19:42:44,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2020-12-22 19:42:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 9733. [2020-12-22 19:42:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9733 states. [2020-12-22 19:42:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 14083 transitions. [2020-12-22 19:42:45,059 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 14083 transitions. Word has length 28 [2020-12-22 19:42:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:45,060 INFO L481 AbstractCegarLoop]: Abstraction has 9733 states and 14083 transitions. [2020-12-22 19:42:45,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 14083 transitions. [2020-12-22 19:42:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:45,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:45,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:45,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 19:42:45,072 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1968795565, now seen corresponding path program 1 times [2020-12-22 19:42:45,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:45,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366280033] [2020-12-22 19:42:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:45,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366280033] [2020-12-22 19:42:45,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:45,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:45,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826490481] [2020-12-22 19:42:45,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:45,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:45,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:45,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,102 INFO L87 Difference]: Start difference. First operand 9733 states and 14083 transitions. Second operand 3 states. [2020-12-22 19:42:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:45,177 INFO L93 Difference]: Finished difference Result 16903 states and 24708 transitions. [2020-12-22 19:42:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:45,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:45,217 INFO L225 Difference]: With dead ends: 16903 [2020-12-22 19:42:45,217 INFO L226 Difference]: Without dead ends: 16903 [2020-12-22 19:42:45,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16903 states. [2020-12-22 19:42:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16903 to 14341. [2020-12-22 19:42:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-12-22 19:42:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 20099 transitions. [2020-12-22 19:42:45,654 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 20099 transitions. Word has length 28 [2020-12-22 19:42:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:45,654 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 20099 transitions. [2020-12-22 19:42:45,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 20099 transitions. [2020-12-22 19:42:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:45,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:45,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:45,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:42:45,677 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1305103377, now seen corresponding path program 1 times [2020-12-22 19:42:45,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:45,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36096590] [2020-12-22 19:42:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:45,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36096590] [2020-12-22 19:42:45,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:45,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:45,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628386544] [2020-12-22 19:42:45,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:45,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,702 INFO L87 Difference]: Start difference. First operand 14341 states and 20099 transitions. Second operand 3 states. [2020-12-22 19:42:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:45,905 INFO L93 Difference]: Finished difference Result 18951 states and 26372 transitions. [2020-12-22 19:42:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:45,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:45,960 INFO L225 Difference]: With dead ends: 18951 [2020-12-22 19:42:45,960 INFO L226 Difference]: Without dead ends: 18951 [2020-12-22 19:42:45,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18951 states. [2020-12-22 19:42:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18951 to 18949. [2020-12-22 19:42:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18949 states. [2020-12-22 19:42:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18949 states to 18949 states and 26371 transitions. [2020-12-22 19:42:46,513 INFO L78 Accepts]: Start accepts. Automaton has 18949 states and 26371 transitions. Word has length 28 [2020-12-22 19:42:46,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:46,513 INFO L481 AbstractCegarLoop]: Abstraction has 18949 states and 26371 transitions. [2020-12-22 19:42:46,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18949 states and 26371 transitions. [2020-12-22 19:42:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:46,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:46,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:46,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:42:46,552 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash -902905267, now seen corresponding path program 1 times [2020-12-22 19:42:46,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:46,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437106488] [2020-12-22 19:42:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:46,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437106488] [2020-12-22 19:42:46,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:46,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:46,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216956313] [2020-12-22 19:42:46,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:46,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:46,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:46,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:46,575 INFO L87 Difference]: Start difference. First operand 18949 states and 26371 transitions. Second operand 3 states. [2020-12-22 19:42:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:46,661 INFO L93 Difference]: Finished difference Result 19207 states and 26372 transitions. [2020-12-22 19:42:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:46,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:46,701 INFO L225 Difference]: With dead ends: 19207 [2020-12-22 19:42:46,701 INFO L226 Difference]: Without dead ends: 19207 [2020-12-22 19:42:46,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2020-12-22 19:42:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 19205. [2020-12-22 19:42:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19205 states. [2020-12-22 19:42:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 26371 transitions. [2020-12-22 19:42:47,185 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 26371 transitions. Word has length 29 [2020-12-22 19:42:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:47,185 INFO L481 AbstractCegarLoop]: Abstraction has 19205 states and 26371 transitions. [2020-12-22 19:42:47,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 26371 transitions. [2020-12-22 19:42:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:47,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:47,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:47,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:42:47,216 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1803714127, now seen corresponding path program 1 times [2020-12-22 19:42:47,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:47,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191354683] [2020-12-22 19:42:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:47,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191354683] [2020-12-22 19:42:47,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:47,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:47,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071307852] [2020-12-22 19:42:47,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:47,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:47,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:47,243 INFO L87 Difference]: Start difference. First operand 19205 states and 26371 transitions. Second operand 3 states. [2020-12-22 19:42:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:47,542 INFO L93 Difference]: Finished difference Result 32775 states and 45316 transitions. [2020-12-22 19:42:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:47,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:47,657 INFO L225 Difference]: With dead ends: 32775 [2020-12-22 19:42:47,657 INFO L226 Difference]: Without dead ends: 32775 [2020-12-22 19:42:47,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32775 states. [2020-12-22 19:42:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32775 to 28677. [2020-12-22 19:42:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28677 states. [2020-12-22 19:42:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28677 states to 28677 states and 38147 transitions. [2020-12-22 19:42:48,552 INFO L78 Accepts]: Start accepts. Automaton has 28677 states and 38147 transitions. Word has length 29 [2020-12-22 19:42:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:48,552 INFO L481 AbstractCegarLoop]: Abstraction has 28677 states and 38147 transitions. [2020-12-22 19:42:48,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28677 states and 38147 transitions. [2020-12-22 19:42:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:48,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:48,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:48,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 19:42:48,597 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 782645773, now seen corresponding path program 1 times [2020-12-22 19:42:48,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:48,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597306420] [2020-12-22 19:42:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:48,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597306420] [2020-12-22 19:42:48,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:48,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:48,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836997999] [2020-12-22 19:42:48,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:48,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:48,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:48,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:48,622 INFO L87 Difference]: Start difference. First operand 28677 states and 38147 transitions. Second operand 3 states. [2020-12-22 19:42:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:48,762 INFO L93 Difference]: Finished difference Result 37383 states and 49156 transitions. [2020-12-22 19:42:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:48,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:48,844 INFO L225 Difference]: With dead ends: 37383 [2020-12-22 19:42:48,845 INFO L226 Difference]: Without dead ends: 37383 [2020-12-22 19:42:48,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37383 states. [2020-12-22 19:42:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37383 to 37381. [2020-12-22 19:42:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37381 states. [2020-12-22 19:42:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37381 states to 37381 states and 49155 transitions. [2020-12-22 19:42:49,936 INFO L78 Accepts]: Start accepts. Automaton has 37381 states and 49155 transitions. Word has length 29 [2020-12-22 19:42:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:49,936 INFO L481 AbstractCegarLoop]: Abstraction has 37381 states and 49155 transitions. [2020-12-22 19:42:49,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 37381 states and 49155 transitions. [2020-12-22 19:42:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:49,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:49,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:49,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 19:42:49,978 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash 80778534, now seen corresponding path program 1 times [2020-12-22 19:42:49,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:49,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285436816] [2020-12-22 19:42:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:50,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285436816] [2020-12-22 19:42:50,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:50,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:50,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607268838] [2020-12-22 19:42:50,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:50,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:50,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:50,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:50,004 INFO L87 Difference]: Start difference. First operand 37381 states and 49155 transitions. Second operand 3 states. [2020-12-22 19:42:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:50,119 INFO L93 Difference]: Finished difference Result 37895 states and 49156 transitions. [2020-12-22 19:42:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:50,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 19:42:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:50,197 INFO L225 Difference]: With dead ends: 37895 [2020-12-22 19:42:50,197 INFO L226 Difference]: Without dead ends: 37895 [2020-12-22 19:42:50,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37895 states. [2020-12-22 19:42:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37895 to 37893. [2020-12-22 19:42:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37893 states. [2020-12-22 19:42:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37893 states to 37893 states and 49155 transitions. [2020-12-22 19:42:51,235 INFO L78 Accepts]: Start accepts. Automaton has 37893 states and 49155 transitions. Word has length 30 [2020-12-22 19:42:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:51,235 INFO L481 AbstractCegarLoop]: Abstraction has 37893 states and 49155 transitions. [2020-12-22 19:42:51,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 37893 states and 49155 transitions. [2020-12-22 19:42:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:51,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:51,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:42:51,262 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1507569368, now seen corresponding path program 1 times [2020-12-22 19:42:51,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:51,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857291591] [2020-12-22 19:42:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857291591] [2020-12-22 19:42:51,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:51,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181343975] [2020-12-22 19:42:51,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:51,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:51,295 INFO L87 Difference]: Start difference. First operand 37893 states and 49155 transitions. Second operand 3 states. [2020-12-22 19:42:51,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:51,473 INFO L93 Difference]: Finished difference Result 73735 states and 92164 transitions. [2020-12-22 19:42:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:51,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 19:42:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:51,589 INFO L225 Difference]: With dead ends: 73735 [2020-12-22 19:42:51,589 INFO L226 Difference]: Without dead ends: 73735 [2020-12-22 19:42:51,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73735 states. [2020-12-22 19:42:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73735 to 73733. [2020-12-22 19:42:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73733 states. [2020-12-22 19:42:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 92163 transitions. [2020-12-22 19:42:53,088 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 92163 transitions. Word has length 30 [2020-12-22 19:42:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:53,088 INFO L481 AbstractCegarLoop]: Abstraction has 73733 states and 92163 transitions. [2020-12-22 19:42:53,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 92163 transitions. [2020-12-22 19:42:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:53,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:53,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:53,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:42:53,217 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -486501014, now seen corresponding path program 1 times [2020-12-22 19:42:53,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:53,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359318013] [2020-12-22 19:42:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:53,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359318013] [2020-12-22 19:42:53,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:53,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:53,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889107783] [2020-12-22 19:42:53,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:53,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:53,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:53,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:53,245 INFO L87 Difference]: Start difference. First operand 73733 states and 92163 transitions. Second operand 3 states. [2020-12-22 19:42:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:53,500 INFO L93 Difference]: Finished difference Result 79879 states and 101380 transitions. [2020-12-22 19:42:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:53,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 19:42:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:53,619 INFO L225 Difference]: With dead ends: 79879 [2020-12-22 19:42:53,619 INFO L226 Difference]: Without dead ends: 79879 [2020-12-22 19:42:53,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2020-12-22 19:42:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 73733. [2020-12-22 19:42:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73733 states. [2020-12-22 19:42:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 91139 transitions. [2020-12-22 19:42:55,013 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 91139 transitions. Word has length 30 [2020-12-22 19:42:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:55,013 INFO L481 AbstractCegarLoop]: Abstraction has 73733 states and 91139 transitions. [2020-12-22 19:42:55,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 91139 transitions. [2020-12-22 19:42:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:42:55,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:55,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:55,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 19:42:55,086 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:55,087 INFO L82 PathProgramCache]: Analyzing trace with hash 510205634, now seen corresponding path program 1 times [2020-12-22 19:42:55,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:55,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030451453] [2020-12-22 19:42:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:55,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030451453] [2020-12-22 19:42:55,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:55,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:55,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584876458] [2020-12-22 19:42:55,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:55,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:55,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:55,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:55,112 INFO L87 Difference]: Start difference. First operand 73733 states and 91139 transitions. Second operand 3 states. [2020-12-22 19:42:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:55,796 INFO L93 Difference]: Finished difference Result 121863 states and 149508 transitions. [2020-12-22 19:42:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:55,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 19:42:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:56,037 INFO L225 Difference]: With dead ends: 121863 [2020-12-22 19:42:56,037 INFO L226 Difference]: Without dead ends: 121863 [2020-12-22 19:42:56,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121863 states. [2020-12-22 19:42:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121863 to 113669. [2020-12-22 19:42:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113669 states. [2020-12-22 19:42:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113669 states to 113669 states and 137219 transitions. [2020-12-22 19:42:57,678 INFO L78 Accepts]: Start accepts. Automaton has 113669 states and 137219 transitions. Word has length 31 [2020-12-22 19:42:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:57,678 INFO L481 AbstractCegarLoop]: Abstraction has 113669 states and 137219 transitions. [2020-12-22 19:42:57,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113669 states and 137219 transitions. [2020-12-22 19:42:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:42:57,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:57,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:57,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 19:42:57,752 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:57,753 INFO L82 PathProgramCache]: Analyzing trace with hash -510862720, now seen corresponding path program 1 times [2020-12-22 19:42:57,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:57,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919905138] [2020-12-22 19:42:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:58,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919905138] [2020-12-22 19:42:58,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:58,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:58,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380748470] [2020-12-22 19:42:58,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:58,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:58,232 INFO L87 Difference]: Start difference. First operand 113669 states and 137219 transitions. Second operand 3 states. [2020-12-22 19:42:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:58,755 INFO L93 Difference]: Finished difference Result 144391 states and 169988 transitions. [2020-12-22 19:42:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:58,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 19:42:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:58,889 INFO L225 Difference]: With dead ends: 144391 [2020-12-22 19:42:58,889 INFO L226 Difference]: Without dead ends: 144391 [2020-12-22 19:42:58,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144391 states. [2020-12-22 19:43:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144391 to 144389. [2020-12-22 19:43:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144389 states. [2020-12-22 19:43:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144389 states to 144389 states and 169987 transitions. [2020-12-22 19:43:01,423 INFO L78 Accepts]: Start accepts. Automaton has 144389 states and 169987 transitions. Word has length 31 [2020-12-22 19:43:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:01,423 INFO L481 AbstractCegarLoop]: Abstraction has 144389 states and 169987 transitions. [2020-12-22 19:43:01,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 144389 states and 169987 transitions. [2020-12-22 19:43:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:43:01,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:01,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:01,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 19:43:01,502 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:43:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:01,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1363278403, now seen corresponding path program 1 times [2020-12-22 19:43:01,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:01,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379235585] [2020-12-22 19:43:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:01,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379235585] [2020-12-22 19:43:01,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:01,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:43:01,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803102552] [2020-12-22 19:43:01,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:01,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:01,534 INFO L87 Difference]: Start difference. First operand 144389 states and 169987 transitions. Second operand 3 states. [2020-12-22 19:43:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:02,737 INFO L93 Difference]: Finished difference Result 147463 states and 172036 transitions. [2020-12-22 19:43:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:02,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 19:43:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:02,918 INFO L225 Difference]: With dead ends: 147463 [2020-12-22 19:43:02,919 INFO L226 Difference]: Without dead ends: 147463 [2020-12-22 19:43:02,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147463 states. [2020-12-22 19:43:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147463 to 147461. [2020-12-22 19:43:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147461 states. [2020-12-22 19:43:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147461 states to 147461 states and 172035 transitions. [2020-12-22 19:43:05,511 INFO L78 Accepts]: Start accepts. Automaton has 147461 states and 172035 transitions. Word has length 32 [2020-12-22 19:43:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:05,511 INFO L481 AbstractCegarLoop]: Abstraction has 147461 states and 172035 transitions. [2020-12-22 19:43:05,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 147461 states and 172035 transitions. [2020-12-22 19:43:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:43:05,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:05,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:05,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 19:43:05,584 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:43:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:05,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1343340991, now seen corresponding path program 1 times [2020-12-22 19:43:05,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:05,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243905209] [2020-12-22 19:43:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:05,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243905209] [2020-12-22 19:43:05,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:05,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:43:05,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180189268] [2020-12-22 19:43:05,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:05,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:05,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:05,616 INFO L87 Difference]: Start difference. First operand 147461 states and 172035 transitions. Second operand 3 states. [2020-12-22 19:43:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:06,782 INFO L93 Difference]: Finished difference Result 237573 states and 270339 transitions. [2020-12-22 19:43:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:06,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 19:43:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:07,112 INFO L225 Difference]: With dead ends: 237573 [2020-12-22 19:43:07,112 INFO L226 Difference]: Without dead ends: 237573 [2020-12-22 19:43:07,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237573 states. [2020-12-22 19:43:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237573 to 229381. [2020-12-22 19:43:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229381 states. [2020-12-22 19:43:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229381 states to 229381 states and 262147 transitions. [2020-12-22 19:43:11,238 INFO L78 Accepts]: Start accepts. Automaton has 229381 states and 262147 transitions. Word has length 32 [2020-12-22 19:43:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:11,239 INFO L481 AbstractCegarLoop]: Abstraction has 229381 states and 262147 transitions. [2020-12-22 19:43:11,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 229381 states and 262147 transitions. [2020-12-22 19:43:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:43:11,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:11,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:11,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 19:43:11,401 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:43:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 322272637, now seen corresponding path program 1 times [2020-12-22 19:43:11,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:11,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255172445] [2020-12-22 19:43:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:11,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255172445] [2020-12-22 19:43:11,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:11,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:43:11,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175370333] [2020-12-22 19:43:11,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:11,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:11,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:11,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:11,426 INFO L87 Difference]: Start difference. First operand 229381 states and 262147 transitions. Second operand 3 states. [2020-12-22 19:43:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:12,869 INFO L93 Difference]: Finished difference Result 286723 states and 315394 transitions. [2020-12-22 19:43:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:12,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 19:43:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:12,869 INFO L225 Difference]: With dead ends: 286723 [2020-12-22 19:43:12,869 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:43:12,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:43:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:43:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:43:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:43:12,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-22 19:43:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:12,870 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:43:12,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:43:12,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:43:12,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 19:43:12,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:43:12 BoogieIcfgContainer [2020-12-22 19:43:12,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:43:12,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:43:12,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:43:12,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:43:12,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:40" (3/4) ... [2020-12-22 19:43:12,880 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:43:12,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 19:43:12,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:43:12,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-22 19:43:12,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:43:12,951 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_13.c-witness.graphml [2020-12-22 19:43:12,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:43:12,953 INFO L168 Benchmark]: Toolchain (without parser) took 33785.69 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 125.5 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,953 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:12,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,955 INFO L168 Benchmark]: Boogie Preprocessor took 67.25 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,955 INFO L168 Benchmark]: RCFGBuilder took 904.52 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 122.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,956 INFO L168 Benchmark]: TraceAbstraction took 32236.55 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 121.8 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,956 INFO L168 Benchmark]: Witness Printer took 75.25 ms. Allocated memory is still 7.8 GB. Free memory was 4.9 GB in the beginning and 4.9 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:12,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.25 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 904.52 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 122.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32236.55 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 121.8 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. * Witness Printer took 75.25 ms. Allocated memory is still 7.8 GB. Free memory was 4.9 GB in the beginning and 4.9 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 205]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.1s, OverallIterations: 38, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3966 SDtfs, 2002 SDslu, 2564 SDs, 0 SdLazy, 192 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229381occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.8s AutomataMinimizationTime, 38 MinimizatonAttempts, 32806 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 951 NumberOfCodeBlocks, 951 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 913 ConstructedInterpolants, 0 QuantifiedInterpolants, 50713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...