/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:28:27,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:28:27,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:28:27,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:28:27,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:28:27,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:28:27,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:28:27,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:28:27,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:28:27,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:28:27,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:28:27,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:28:27,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:28:27,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:28:27,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:28:27,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:28:27,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:28:27,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:28:27,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:28:27,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:28:27,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:28:27,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:28:27,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:28:27,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:28:27,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:28:27,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:28:27,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:28:27,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:28:27,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:28:27,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:28:27,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:28:27,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:28:27,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:28:27,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:28:27,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:28:27,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:28:27,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:28:27,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:28:27,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:28:27,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:28:27,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:28:27,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:28:27,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:28:27,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:28:27,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:28:27,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:28:27,804 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:28:27,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:28:27,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:28:27,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:28:27,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:28:27,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:28:27,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:28:27,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:28:27,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:28:27,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:28:27,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:28:27,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:28:27,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:28:27,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:28:27,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:28:27,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:28:27,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:28:27,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:28:27,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:28:27,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:28:27,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:28:27,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:28:27,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:28:27,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:28:27,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:28:27,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:28:28,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:28:28,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:28:28,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:28:28,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:28:28,348 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:28:28,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-21 11:28:28,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff0917f3/adeade5f8c3841ac825c422aa5b0b7d2/FLAG4e6a4f1b3 [2020-09-21 11:28:29,020 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:28:29,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-21 11:28:29,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff0917f3/adeade5f8c3841ac825c422aa5b0b7d2/FLAG4e6a4f1b3 [2020-09-21 11:28:29,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff0917f3/adeade5f8c3841ac825c422aa5b0b7d2 [2020-09-21 11:28:29,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:28:29,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:28:29,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:29,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:28:29,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:28:29,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4241192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29, skipping insertion in model container [2020-09-21 11:28:29,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:28:29,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:28:29,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:29,715 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:28:29,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:29,792 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:28:29,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29 WrapperNode [2020-09-21 11:28:29,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:29,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:28:29,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:28:29,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:28:29,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:28:29,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:28:29,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:28:29,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:28:29,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 11:28:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:28:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:28:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:28:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:28:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:28:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:28:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:28:30,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:28:30,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:28:30,478 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:28:30,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:30 BoogieIcfgContainer [2020-09-21 11:28:30,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:28:30,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:28:30,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:28:30,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:28:30,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:28:29" (1/3) ... [2020-09-21 11:28:30,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58708a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:30, skipping insertion in model container [2020-09-21 11:28:30,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (2/3) ... [2020-09-21 11:28:30,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58708a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:30, skipping insertion in model container [2020-09-21 11:28:30,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:30" (3/3) ... [2020-09-21 11:28:30,495 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-09-21 11:28:30,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:28:30,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:28:30,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:28:30,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:28:30,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:28:30,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:28:30,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:28:30,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:28:30,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:28:30,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:28:30,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:28:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 11:28:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:28:30,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:30,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:30,625 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:30,632 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-09-21 11:28:30,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:30,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79513074] [2020-09-21 11:28:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:30,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:30,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:30,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:30,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:30,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:28:30,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:28:30,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:30,886 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:30,887 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:30,887 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:30,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79513074] [2020-09-21 11:28:30,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:30,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:28:30,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3974592] [2020-09-21 11:28:30,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:28:30,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:28:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:28:30,937 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-09-21 11:28:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:31,006 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-09-21 11:28:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:28:31,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 11:28:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:31,024 INFO L225 Difference]: With dead ends: 136 [2020-09-21 11:28:31,025 INFO L226 Difference]: Without dead ends: 61 [2020-09-21 11:28:31,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:28:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-21 11:28:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-21 11:28:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-21 11:28:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-09-21 11:28:31,086 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-09-21 11:28:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:31,086 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-09-21 11:28:31,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:28:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-09-21 11:28:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:28:31,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:31,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:31,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:28:31,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:31,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-09-21 11:28:31,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:31,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635831269] [2020-09-21 11:28:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:28:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:28:31,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:28:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:28:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,193 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:31,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635831269] [2020-09-21 11:28:31,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:31,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:31,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204465545] [2020-09-21 11:28:31,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:31,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:31,208 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2020-09-21 11:28:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:31,522 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2020-09-21 11:28:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:31,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 11:28:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:31,525 INFO L225 Difference]: With dead ends: 119 [2020-09-21 11:28:31,525 INFO L226 Difference]: Without dead ends: 64 [2020-09-21 11:28:31,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-21 11:28:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-09-21 11:28:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 11:28:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-09-21 11:28:31,562 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2020-09-21 11:28:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:31,562 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-09-21 11:28:31,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-09-21 11:28:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:28:31,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:31,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:31,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:28:31,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-09-21 11:28:31,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:31,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448777788] [2020-09-21 11:28:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:28:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:28:31,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:28:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,650 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,650 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,651 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:31,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448777788] [2020-09-21 11:28:31,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:31,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:31,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463588833] [2020-09-21 11:28:31,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:31,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:31,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:31,663 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2020-09-21 11:28:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:31,776 INFO L93 Difference]: Finished difference Result 113 states and 169 transitions. [2020-09-21 11:28:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:31,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:28:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:31,779 INFO L225 Difference]: With dead ends: 113 [2020-09-21 11:28:31,779 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:28:31,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:28:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 11:28:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:28:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 80 transitions. [2020-09-21 11:28:31,797 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 80 transitions. Word has length 19 [2020-09-21 11:28:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:31,799 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 80 transitions. [2020-09-21 11:28:31,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 80 transitions. [2020-09-21 11:28:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:28:31,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:31,802 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:31,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:28:31,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:31,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-09-21 11:28:31,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:31,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124316332] [2020-09-21 11:28:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,848 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:28:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:28:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,896 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,897 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,897 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:31,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124316332] [2020-09-21 11:28:31,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:31,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:31,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542058449] [2020-09-21 11:28:31,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:31,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:31,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:31,908 INFO L87 Difference]: Start difference. First operand 56 states and 80 transitions. Second operand 4 states. [2020-09-21 11:28:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:32,083 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2020-09-21 11:28:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:32,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 11:28:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:32,085 INFO L225 Difference]: With dead ends: 140 [2020-09-21 11:28:32,086 INFO L226 Difference]: Without dead ends: 94 [2020-09-21 11:28:32,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-21 11:28:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-09-21 11:28:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-21 11:28:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-09-21 11:28:32,119 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 24 [2020-09-21 11:28:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:32,119 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-09-21 11:28:32,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-09-21 11:28:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:28:32,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:32,121 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:32,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:28:32,121 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-09-21 11:28:32,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:32,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669880316] [2020-09-21 11:28:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,174 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:28:32,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:28:32,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:28:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,244 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,244 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,244 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:32,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:32,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669880316] [2020-09-21 11:28:32,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:32,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:32,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840388456] [2020-09-21 11:28:32,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:32,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:32,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:32,260 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 4 states. [2020-09-21 11:28:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:32,416 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2020-09-21 11:28:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:32,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:28:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:32,418 INFO L225 Difference]: With dead ends: 180 [2020-09-21 11:28:32,418 INFO L226 Difference]: Without dead ends: 101 [2020-09-21 11:28:32,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-21 11:28:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-09-21 11:28:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-21 11:28:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2020-09-21 11:28:32,430 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 25 [2020-09-21 11:28:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:32,431 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2020-09-21 11:28:32,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2020-09-21 11:28:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:28:32,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:32,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:32,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:28:32,433 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:32,434 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-09-21 11:28:32,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:32,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004941614] [2020-09-21 11:28:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,461 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,462 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:28:32,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:28:32,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 11:28:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:28:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:32,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,528 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,528 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:28:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:32,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004941614] [2020-09-21 11:28:32,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:32,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:32,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817219172] [2020-09-21 11:28:32,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:32,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:32,546 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand 4 states. [2020-09-21 11:28:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:32,675 INFO L93 Difference]: Finished difference Result 164 states and 234 transitions. [2020-09-21 11:28:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:32,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 11:28:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:32,677 INFO L225 Difference]: With dead ends: 164 [2020-09-21 11:28:32,677 INFO L226 Difference]: Without dead ends: 77 [2020-09-21 11:28:32,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-21 11:28:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-21 11:28:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 11:28:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2020-09-21 11:28:32,701 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 36 [2020-09-21 11:28:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:32,702 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2020-09-21 11:28:32,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2020-09-21 11:28:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:28:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:32,703 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-09-21 11:28:32,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:28:32,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-09-21 11:28:32,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152187157] [2020-09-21 11:28:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:28:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:28:32,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:28:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:28:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:28:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:32,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:32,845 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:32,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:32,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:32,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:32,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:32,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152187157] [2020-09-21 11:28:32,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:32,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:28:32,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796704798] [2020-09-21 11:28:32,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:28:32,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:32,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:28:32,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:32,855 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 5 states. [2020-09-21 11:28:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:33,112 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2020-09-21 11:28:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:28:33,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-21 11:28:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:33,113 INFO L225 Difference]: With dead ends: 80 [2020-09-21 11:28:33,113 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:28:33,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:28:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:28:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:28:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:28:33,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-09-21 11:28:33,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:33,115 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:28:33,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:28:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:28:33,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:28:33,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:28:33,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:28:33,358 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:28:33,358 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|)) [2020-09-21 11:28:33,358 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:28:33,358 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:28:33,358 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:28:33,359 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-09-21 11:28:33,359 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))))) [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-09-21 11:28:33,360 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-09-21 11:28:33,361 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-09-21 11:28:33,362 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (or (and (= main_~q~0 0) (= main_~this_sink~0 0)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-09-21 11:28:33,363 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-09-21 11:28:33,364 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-09-21 11:28:33,365 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-09-21 11:28:33,366 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-09-21 11:28:33,367 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-09-21 11:28:33,368 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-09-21 11:28:33,368 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-09-21 11:28:33,368 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-09-21 11:28:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:28:33 BoogieIcfgContainer [2020-09-21 11:28:33,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:28:33,395 INFO L168 Benchmark]: Toolchain (without parser) took 4026.60 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 101.2 MB in the beginning and 148.3 MB in the end (delta: -47.0 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:33,396 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:28:33,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.01 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 88.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:33,398 INFO L168 Benchmark]: Boogie Preprocessor took 133.92 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 88.3 MB in the beginning and 178.0 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:33,399 INFO L168 Benchmark]: RCFGBuilder took 556.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 150.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:33,400 INFO L168 Benchmark]: TraceAbstraction took 2905.10 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 149.8 MB in the beginning and 148.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:33,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.01 ms. Allocated memory is still 138.4 MB. Free memory was 100.6 MB in the beginning and 88.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.92 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 88.3 MB in the beginning and 178.0 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 556.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 150.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2905.10 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 149.8 MB in the beginning and 148.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((this_sink == 0 && q == 2) || (q == 0 && this_sink == 0)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 777 SDslu, 50 SDs, 0 SdLazy, 351 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 72 HoareAnnotationTreeSize, 7 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 12069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...