/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:36:15,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:36:15,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:36:15,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:36:15,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:36:15,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:36:15,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:36:15,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:36:15,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:36:15,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:36:15,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:36:15,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:36:15,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:36:15,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:36:15,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:36:15,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:36:15,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:36:15,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:36:15,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:36:15,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:36:15,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:36:15,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:36:15,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:36:15,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:36:15,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:36:15,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:36:15,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:36:15,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:36:15,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:36:15,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:36:15,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:36:15,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:36:15,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:36:15,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:36:15,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:36:15,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:36:15,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:36:15,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:36:15,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:36:15,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:36:15,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:36:15,734 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 [2020-09-25 13:36:15,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:36:15,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:36:15,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:36:15,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:36:15,780 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:36:15,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:36:15,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:36:15,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:36:15,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:36:15,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:36:15,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:36:15,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:36:15,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:36:15,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:36:15,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:36:15,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:36:15,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:36:15,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:36:15,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:36:15,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:36:15,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:36:15,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:36:15,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:36:15,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:36:15,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:36:15,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:36:15,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:36:15,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:36:15,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:36:15,785 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:36:16,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:36:16,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:36:16,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:36:16,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:36:16,355 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:36:16,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 13:36:16,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82156d69c/dd1b6cdd954b432cb5f4e12642fd0611/FLAG594002351 [2020-09-25 13:36:17,043 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:36:17,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-09-25 13:36:17,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82156d69c/dd1b6cdd954b432cb5f4e12642fd0611/FLAG594002351 [2020-09-25 13:36:17,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82156d69c/dd1b6cdd954b432cb5f4e12642fd0611 [2020-09-25 13:36:17,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:36:17,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:36:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:36:17,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:36:17,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17, skipping insertion in model container [2020-09-25 13:36:17,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:36:17,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:36:17,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:17,758 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:36:17,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:36:17,814 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:36:17,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17 WrapperNode [2020-09-25 13:36:17,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:36:17,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:36:17,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:36:17,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:36:17,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (1/1) ... [2020-09-25 13:36:17,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:36:17,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:36:17,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:36:17,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:36:17,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (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 [2020-09-25 13:36:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:36:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:36:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:36:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:36:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:36:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:36:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:36:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:36:18,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:36:18,681 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 13:36:18,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:18 BoogieIcfgContainer [2020-09-25 13:36:18,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:36:18,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:36:18,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:36:18,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:36:18,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:36:17" (1/3) ... [2020-09-25 13:36:18,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120f475e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:18, skipping insertion in model container [2020-09-25 13:36:18,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:36:17" (2/3) ... [2020-09-25 13:36:18,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120f475e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:36:18, skipping insertion in model container [2020-09-25 13:36:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:36:18" (3/3) ... [2020-09-25 13:36:18,714 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-09-25 13:36:18,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:36:18,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:36:18,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:36:18,818 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:36:18,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:36:18,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:36:18,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:36:18,819 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:36:18,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:36:18,820 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:36:18,820 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:36:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-09-25 13:36:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 13:36:18,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:18,866 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] [2020-09-25 13:36:18,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146259, now seen corresponding path program 1 times [2020-09-25 13:36:18,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:18,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079136148] [2020-09-25 13:36:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:36:19,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 13:36:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:36:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:36:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:19,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:36:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:19,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079136148] [2020-09-25 13:36:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:19,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:36:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002191140] [2020-09-25 13:36:19,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:36:19,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:19,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:36:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:36:19,286 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 3 states. [2020-09-25 13:36:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:19,381 INFO L93 Difference]: Finished difference Result 369 states and 507 transitions. [2020-09-25 13:36:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:36:19,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-25 13:36:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:19,404 INFO L225 Difference]: With dead ends: 369 [2020-09-25 13:36:19,405 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 13:36:19,411 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 [2020-09-25 13:36:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 13:36:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-25 13:36:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 13:36:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2020-09-25 13:36:19,474 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 22 [2020-09-25 13:36:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:19,475 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2020-09-25 13:36:19,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:36:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2020-09-25 13:36:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 13:36:19,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:19,477 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] [2020-09-25 13:36:19,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:36:19,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:19,479 INFO L82 PathProgramCache]: Analyzing trace with hash -946920198, now seen corresponding path program 1 times [2020-09-25 13:36:19,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:19,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983627406] [2020-09-25 13:36:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:36:19,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:36:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 13:36:19,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:19,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:36:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:36:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:36:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:19,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:19,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983627406] [2020-09-25 13:36:19,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:19,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:19,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124316332] [2020-09-25 13:36:19,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:19,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:19,814 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand 4 states. [2020-09-25 13:36:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:20,279 INFO L93 Difference]: Finished difference Result 350 states and 425 transitions. [2020-09-25 13:36:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:20,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-25 13:36:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:20,282 INFO L225 Difference]: With dead ends: 350 [2020-09-25 13:36:20,283 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 13:36:20,285 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 [2020-09-25 13:36:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 13:36:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-09-25 13:36:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-25 13:36:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 221 transitions. [2020-09-25 13:36:20,304 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 221 transitions. Word has length 23 [2020-09-25 13:36:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:20,304 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 221 transitions. [2020-09-25 13:36:20,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 221 transitions. [2020-09-25 13:36:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 13:36:20,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:20,306 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:20,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:36:20,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1840173547, now seen corresponding path program 1 times [2020-09-25 13:36:20,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:20,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421615293] [2020-09-25 13:36:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:36:20,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 13:36:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 13:36:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:20,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:20,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:20,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:36:20,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:20,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:20,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421615293] [2020-09-25 13:36:20,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:20,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:20,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102239273] [2020-09-25 13:36:20,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:20,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:20,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:20,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:20,482 INFO L87 Difference]: Start difference. First operand 185 states and 221 transitions. Second operand 4 states. [2020-09-25 13:36:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:21,009 INFO L93 Difference]: Finished difference Result 517 states and 625 transitions. [2020-09-25 13:36:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:21,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 13:36:21,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:21,012 INFO L225 Difference]: With dead ends: 517 [2020-09-25 13:36:21,013 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 13:36:21,014 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 [2020-09-25 13:36:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 13:36:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 274. [2020-09-25 13:36:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 13:36:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-09-25 13:36:21,035 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 32 [2020-09-25 13:36:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:21,036 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-09-25 13:36:21,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-09-25 13:36:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 13:36:21,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:21,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:21,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:21,039 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash -47890514, now seen corresponding path program 1 times [2020-09-25 13:36:21,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:21,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706117602] [2020-09-25 13:36:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:36:21,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:36:21,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 13:36:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:36:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:21,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:36:21,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:21,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706117602] [2020-09-25 13:36:21,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:21,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:21,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357564786] [2020-09-25 13:36:21,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:21,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:21,165 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 4 states. [2020-09-25 13:36:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:21,460 INFO L93 Difference]: Finished difference Result 486 states and 586 transitions. [2020-09-25 13:36:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:21,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-25 13:36:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:21,462 INFO L225 Difference]: With dead ends: 486 [2020-09-25 13:36:21,463 INFO L226 Difference]: Without dead ends: 225 [2020-09-25 13:36:21,464 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 [2020-09-25 13:36:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-09-25 13:36:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-09-25 13:36:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 13:36:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2020-09-25 13:36:21,479 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 40 [2020-09-25 13:36:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:21,479 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2020-09-25 13:36:21,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2020-09-25 13:36:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:36:21,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:21,482 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:21,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:21,482 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:21,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1667007108, now seen corresponding path program 1 times [2020-09-25 13:36:21,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:21,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122153285] [2020-09-25 13:36:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 13:36:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:36:21,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:36:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:36:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:21,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:21,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122153285] [2020-09-25 13:36:21,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:21,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:21,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38148217] [2020-09-25 13:36:21,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:21,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:21,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:21,589 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand 4 states. [2020-09-25 13:36:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:21,770 INFO L93 Difference]: Finished difference Result 384 states and 461 transitions. [2020-09-25 13:36:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:21,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 13:36:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:21,772 INFO L225 Difference]: With dead ends: 384 [2020-09-25 13:36:21,772 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 13:36:21,774 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 [2020-09-25 13:36:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 13:36:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-25 13:36:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 13:36:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2020-09-25 13:36:21,783 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 43 [2020-09-25 13:36:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:21,783 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2020-09-25 13:36:21,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2020-09-25 13:36:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:36:21,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:21,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:21,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:21,787 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:21,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1459500481, now seen corresponding path program 1 times [2020-09-25 13:36:21,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:21,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654427571] [2020-09-25 13:36:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 13:36:21,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:36:21,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:36:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:36:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:21,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:36:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:21,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654427571] [2020-09-25 13:36:21,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:21,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:21,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648664641] [2020-09-25 13:36:21,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:21,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:21,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:21,926 INFO L87 Difference]: Start difference. First operand 174 states and 204 transitions. Second operand 4 states. [2020-09-25 13:36:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:22,321 INFO L93 Difference]: Finished difference Result 372 states and 446 transitions. [2020-09-25 13:36:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:22,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-25 13:36:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:22,325 INFO L225 Difference]: With dead ends: 372 [2020-09-25 13:36:22,325 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 13:36:22,326 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 [2020-09-25 13:36:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 13:36:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 239. [2020-09-25 13:36:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 13:36:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 282 transitions. [2020-09-25 13:36:22,339 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 282 transitions. Word has length 51 [2020-09-25 13:36:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:22,339 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 282 transitions. [2020-09-25 13:36:22,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 282 transitions. [2020-09-25 13:36:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 13:36:22,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:22,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:22,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:36:22,343 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:22,343 INFO L82 PathProgramCache]: Analyzing trace with hash -389028907, now seen corresponding path program 1 times [2020-09-25 13:36:22,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:22,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853457150] [2020-09-25 13:36:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:36:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:22,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:36:22,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:36:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:36:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:22,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:22,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853457150] [2020-09-25 13:36:22,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:22,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:22,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669340763] [2020-09-25 13:36:22,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:22,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:22,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:22,503 INFO L87 Difference]: Start difference. First operand 239 states and 282 transitions. Second operand 4 states. [2020-09-25 13:36:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:22,808 INFO L93 Difference]: Finished difference Result 385 states and 457 transitions. [2020-09-25 13:36:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:22,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 13:36:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:22,811 INFO L225 Difference]: With dead ends: 385 [2020-09-25 13:36:22,811 INFO L226 Difference]: Without dead ends: 215 [2020-09-25 13:36:22,812 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 [2020-09-25 13:36:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-25 13:36:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-09-25 13:36:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 13:36:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 248 transitions. [2020-09-25 13:36:22,825 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 248 transitions. Word has length 52 [2020-09-25 13:36:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:22,825 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 248 transitions. [2020-09-25 13:36:22,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 248 transitions. [2020-09-25 13:36:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:36:22,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:22,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:22,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:36:22,835 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:22,836 INFO L82 PathProgramCache]: Analyzing trace with hash 910217494, now seen corresponding path program 1 times [2020-09-25 13:36:22,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:22,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507830652] [2020-09-25 13:36:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:36:22,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:36:22,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:36:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:36:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:22,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:22,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:22,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:22,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:36:22,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:22,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:22,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507830652] [2020-09-25 13:36:22,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:22,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:22,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703161387] [2020-09-25 13:36:22,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:22,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:22,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:22,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:22,959 INFO L87 Difference]: Start difference. First operand 213 states and 248 transitions. Second operand 4 states. [2020-09-25 13:36:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:23,191 INFO L93 Difference]: Finished difference Result 316 states and 368 transitions. [2020-09-25 13:36:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:23,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 13:36:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:23,194 INFO L225 Difference]: With dead ends: 316 [2020-09-25 13:36:23,194 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 13:36:23,195 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 [2020-09-25 13:36:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 13:36:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-25 13:36:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 13:36:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2020-09-25 13:36:23,205 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 54 [2020-09-25 13:36:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:23,206 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2020-09-25 13:36:23,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2020-09-25 13:36:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:36:23,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:23,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:23,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:36:23,208 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash 57784286, now seen corresponding path program 1 times [2020-09-25 13:36:23,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:23,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362135629] [2020-09-25 13:36:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:36:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:36:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:23,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:36:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:36:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:23,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:23,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:23,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:36:23,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:23,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:23,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:23,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362135629] [2020-09-25 13:36:23,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:23,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:23,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077808636] [2020-09-25 13:36:23,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:23,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:23,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:23,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:23,344 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand 4 states. [2020-09-25 13:36:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:23,559 INFO L93 Difference]: Finished difference Result 174 states and 196 transitions. [2020-09-25 13:36:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:23,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 13:36:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:23,561 INFO L225 Difference]: With dead ends: 174 [2020-09-25 13:36:23,561 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 13:36:23,561 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 [2020-09-25 13:36:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 13:36:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-09-25 13:36:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 13:36:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2020-09-25 13:36:23,568 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 55 [2020-09-25 13:36:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:23,569 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2020-09-25 13:36:23,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2020-09-25 13:36:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 13:36:23,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:23,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:23,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:36:23,570 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:23,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1987485698, now seen corresponding path program 1 times [2020-09-25 13:36:23,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:23,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385728577] [2020-09-25 13:36:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:36:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:36:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:23,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:36:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:36:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:23,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:23,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:36:23,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:36:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:23,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:36:23,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385728577] [2020-09-25 13:36:23,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:23,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:36:23,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672318434] [2020-09-25 13:36:23,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:36:23,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:23,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:36:23,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:36:23,711 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand 4 states. [2020-09-25 13:36:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:23,931 INFO L93 Difference]: Finished difference Result 259 states and 295 transitions. [2020-09-25 13:36:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:36:23,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 13:36:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:23,932 INFO L225 Difference]: With dead ends: 259 [2020-09-25 13:36:23,932 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:36:23,934 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 [2020-09-25 13:36:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:36:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:36:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:36:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:36:23,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-25 13:36:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:23,935 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:36:23,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:36:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:36:23,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:36:23,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:36:23,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:36:24,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:36:24,202 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 13:36:24,203 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-09-25 13:36:24,205 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 13:36:24,205 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 13:36:24,206 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 13:36:24,206 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 13:36:24,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:36:24,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:36:24,206 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:36:24,207 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:36:24,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:36:24,209 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-09-25 13:36:24,209 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L300(line 300) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L300-1(lines 300 315) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L300-2(line 300) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L300-3(line 300) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-09-25 13:36:24,210 INFO L268 CegarLoopResult]: For program point L268(line 268) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L368(line 368) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-09-25 13:36:24,211 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 13:36:24,213 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-09-25 13:36:24,213 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-09-25 13:36:24,214 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-09-25 13:36:24,214 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-09-25 13:36:24,214 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-09-25 13:36:24,214 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 13:36:24,214 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-09-25 13:36:24,214 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-09-25 13:36:24,215 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-09-25 13:36:24,215 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 13:36:24,215 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-09-25 13:36:24,215 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-09-25 13:36:24,215 INFO L268 CegarLoopResult]: For program point L274(line 274) no Hoare annotation was computed. [2020-09-25 13:36:24,216 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-25 13:36:24,216 INFO L268 CegarLoopResult]: For program point L374(line 374) no Hoare annotation was computed. [2020-09-25 13:36:24,216 INFO L268 CegarLoopResult]: For program point L242(line 242) no Hoare annotation was computed. [2020-09-25 13:36:24,216 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L342(line 342) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-09-25 13:36:24,217 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-25 13:36:24,218 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-09-25 13:36:24,218 INFO L268 CegarLoopResult]: For program point L344(line 344) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L80-1(lines 80 95) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L80-2(line 80) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L80-3(line 80) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L312(line 312) no Hoare annotation was computed. [2020-09-25 13:36:24,219 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 13:36:24,220 INFO L268 CegarLoopResult]: For program point L48-1(lines 48 63) no Hoare annotation was computed. [2020-09-25 13:36:24,220 INFO L268 CegarLoopResult]: For program point L48-2(line 48) no Hoare annotation was computed. [2020-09-25 13:36:24,220 INFO L268 CegarLoopResult]: For program point L48-3(line 48) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L148-1(lines 148 163) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L148-2(line 148) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L148-3(line 148) no Hoare annotation was computed. [2020-09-25 13:36:24,221 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:36:24,222 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-25 13:36:24,222 INFO L268 CegarLoopResult]: For program point L248-1(lines 248 263) no Hoare annotation was computed. [2020-09-25 13:36:24,222 INFO L268 CegarLoopResult]: For program point L248-2(line 248) no Hoare annotation was computed. [2020-09-25 13:36:24,222 INFO L268 CegarLoopResult]: For program point L248-3(line 248) no Hoare annotation was computed. [2020-09-25 13:36:24,223 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 13:36:24,223 INFO L268 CegarLoopResult]: For program point L116-1(lines 116 131) no Hoare annotation was computed. [2020-09-25 13:36:24,224 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-09-25 13:36:24,224 INFO L268 CegarLoopResult]: For program point L116-2(line 116) no Hoare annotation was computed. [2020-09-25 13:36:24,224 INFO L268 CegarLoopResult]: For program point L116-3(line 116) no Hoare annotation was computed. [2020-09-25 13:36:24,224 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 13:36:24,224 INFO L268 CegarLoopResult]: For program point L348(line 348) no Hoare annotation was computed. [2020-09-25 13:36:24,224 INFO L268 CegarLoopResult]: For program point L348-1(lines 348 363) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L348-2(line 348) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L348-3(line 348) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L216-1(lines 216 231) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-09-25 13:36:24,225 INFO L268 CegarLoopResult]: For program point L216-2(line 216) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L216-3(line 216) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L316(line 316) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L316-1(lines 316 331) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L316-2(line 316) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L316-3(line 316) no Hoare annotation was computed. [2020-09-25 13:36:24,226 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L184-1(lines 184 199) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L184-2(line 184) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L184-3(line 184) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L284(line 284) no Hoare annotation was computed. [2020-09-25 13:36:24,227 INFO L268 CegarLoopResult]: For program point L284-1(lines 284 299) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L284-2(line 284) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L284-3(line 284) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L252(line 252) no Hoare annotation was computed. [2020-09-25 13:36:24,228 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L352(line 352) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-09-25 13:36:24,229 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-09-25 13:36:24,230 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 13:36:24,231 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-09-25 13:36:24,232 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L258(line 258) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L358(line 358) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 13:36:24,233 INFO L268 CegarLoopResult]: For program point L28-1(lines 28 43) no Hoare annotation was computed. [2020-09-25 13:36:24,234 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 13:36:24,234 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 13:36:24,234 INFO L268 CegarLoopResult]: For program point L326(line 326) no Hoare annotation was computed. [2020-09-25 13:36:24,234 INFO L268 CegarLoopResult]: For program point L260(line 260) no Hoare annotation was computed. [2020-09-25 13:36:24,234 INFO L268 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L360(line 360) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L228(line 228) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-09-25 13:36:24,235 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-09-25 13:36:24,235 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L64-1(lines 64 79) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L64-2(line 64) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L64-3(line 64) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-25 13:36:24,236 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L164-1(lines 164 179) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L164-2(line 164) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L164-3(line 164) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L264-1(lines 264 279) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L264-2(line 264) no Hoare annotation was computed. [2020-09-25 13:36:24,237 INFO L268 CegarLoopResult]: For program point L264-3(line 264) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L132-1(lines 132 147) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L132-2(line 132) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L132-3(line 132) no Hoare annotation was computed. [2020-09-25 13:36:24,238 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L364-1(lines 364 379) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L364-2(line 364) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L364-3(line 364) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L232-1(lines 232 247) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-09-25 13:36:24,239 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L100-1(lines 100 115) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L100-2(line 100) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L100-3(line 100) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L332(line 332) no Hoare annotation was computed. [2020-09-25 13:36:24,240 INFO L268 CegarLoopResult]: For program point L332-1(lines 332 347) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L332-2(line 332) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L332-3(line 332) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L200-1(lines 200 215) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-09-25 13:36:24,241 INFO L268 CegarLoopResult]: For program point L200-2(line 200) no Hoare annotation was computed. [2020-09-25 13:36:24,242 INFO L268 CegarLoopResult]: For program point L200-3(line 200) no Hoare annotation was computed. [2020-09-25 13:36:24,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:36:24 BoogieIcfgContainer [2020-09-25 13:36:24,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:36:24,283 INFO L168 Benchmark]: Toolchain (without parser) took 6889.54 ms. Allocated memory was 140.5 MB in the beginning and 287.3 MB in the end (delta: 146.8 MB). Free memory was 103.4 MB in the beginning and 217.0 MB in the end (delta: -113.6 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,284 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.65 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 90.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,289 INFO L168 Benchmark]: Boogie Preprocessor took 143.95 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 90.3 MB in the beginning and 177.1 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,293 INFO L168 Benchmark]: RCFGBuilder took 737.71 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 140.6 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,294 INFO L168 Benchmark]: TraceAbstraction took 5578.52 ms. Allocated memory was 199.8 MB in the beginning and 287.3 MB in the end (delta: 87.6 MB). Free memory was 139.9 MB in the beginning and 217.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:36:24,304 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.65 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 90.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.95 ms. Allocated memory was 140.5 MB in the beginning and 199.8 MB in the end (delta: 59.2 MB). Free memory was 90.3 MB in the beginning and 177.1 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.71 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 140.6 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5578.52 ms. Allocated memory was 199.8 MB in the beginning and 287.3 MB in the end (delta: 87.6 MB). Free memory was 139.9 MB in the beginning and 217.0 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: ((q <= 0 || (q == 3 && 2 == this_state)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (q <= 0 || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1917 SDtfs, 2759 SDslu, 111 SDs, 0 SdLazy, 1310 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=3, 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, 10 MinimizatonAttempts, 76 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 66 HoareAnnotationTreeSize, 7 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 167 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 35334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 51/51 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...