/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:56:49,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:56:49,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:56:49,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:56:49,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:56:49,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:56:49,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:56:49,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:56:49,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:56:49,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:56:49,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:56:49,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:56:49,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:56:49,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:56:49,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:56:49,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:56:49,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:56:49,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:56:49,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:56:49,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:56:49,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:56:50,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:56:50,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:56:50,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:56:50,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:56:50,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:56:50,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:56:50,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:56:50,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:56:50,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:56:50,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:56:50,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:56:50,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:56:50,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:56:50,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:56:50,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:56:50,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:56:50,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:56:50,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:56:50,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:56:50,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:56:50,033 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 [2020-10-14 22:56:50,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:56:50,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:56:50,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:56:50,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:56:50,070 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:56:50,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:56:50,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:56:50,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:56:50,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:56:50,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:56:50,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:56:50,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:56:50,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:56:50,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:56:50,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:56:50,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:56:50,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:56:50,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:56:50,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:56:50,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:56:50,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:56:50,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:56:50,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:56:50,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:56:50,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:56:50,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:56:50,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:56:50,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:56:50,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:56:50,076 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:56:50,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:56:50,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:56:50,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:56:50,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:56:50,397 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:56:50,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2020-10-14 22:56:50,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a384a72f4/fecbadead9db465f87358a099f09e38d/FLAG4a8c3d501 [2020-10-14 22:56:51,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:56:51,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2020-10-14 22:56:51,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a384a72f4/fecbadead9db465f87358a099f09e38d/FLAG4a8c3d501 [2020-10-14 22:56:51,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a384a72f4/fecbadead9db465f87358a099f09e38d [2020-10-14 22:56:51,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:56:51,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:56:51,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:56:51,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:56:51,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:56:51,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:56:51" (1/1) ... [2020-10-14 22:56:51,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3ac5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:51, skipping insertion in model container [2020-10-14 22:56:51,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:56:51" (1/1) ... [2020-10-14 22:56:51,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:56:52,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:56:54,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:56:54,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:56:55,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:56:55,136 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:56:55,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55 WrapperNode [2020-10-14 22:56:55,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:56:55,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:56:55,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:56:55,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:56:55,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (1/1) ... [2020-10-14 22:56:55,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:56:55,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:56:55,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:56:55,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:56:55,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (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 [2020-10-14 22:56:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 22:56:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 22:56:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 22:56:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:56:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:56:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:56:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:56:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 22:56:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 22:56:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 22:56:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:56:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:56:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:56:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:56:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:56:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:57:06,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:57:06,945 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:57:06,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:57:06 BoogieIcfgContainer [2020-10-14 22:57:06,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:57:06,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:57:06,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:57:06,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:57:06,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:56:51" (1/3) ... [2020-10-14 22:57:06,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282aa702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:57:06, skipping insertion in model container [2020-10-14 22:57:06,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:55" (2/3) ... [2020-10-14 22:57:06,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282aa702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:57:06, skipping insertion in model container [2020-10-14 22:57:06,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:57:06" (3/3) ... [2020-10-14 22:57:06,978 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label04.c [2020-10-14 22:57:06,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:57:06,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:57:07,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:57:07,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:57:07,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:57:07,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:57:07,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:57:07,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:57:07,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:57:07,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:57:07,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:57:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 22:57:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 22:57:07,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:07,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-14 22:57:07,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:07,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1925357510, now seen corresponding path program 1 times [2020-10-14 22:57:07,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:07,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622592422] [2020-10-14 22:57:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:57:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 22:57:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:07,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:57:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:57:07,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:57:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:07,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:07,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:57:07,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:07,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:57:07,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622592422] [2020-10-14 22:57:07,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:57:07,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:57:07,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311564380] [2020-10-14 22:57:07,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:57:07,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:08,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:57:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:57:08,011 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 22:57:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:57:37,022 INFO L93 Difference]: Finished difference Result 6480 states and 12299 transitions. [2020-10-14 22:57:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:57:37,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-14 22:57:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:57:37,082 INFO L225 Difference]: With dead ends: 6480 [2020-10-14 22:57:37,082 INFO L226 Difference]: Without dead ends: 4635 [2020-10-14 22:57:37,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:57:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2020-10-14 22:57:37,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4629. [2020-10-14 22:57:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2020-10-14 22:57:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7749 transitions. [2020-10-14 22:57:37,367 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7749 transitions. Word has length 68 [2020-10-14 22:57:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:57:37,369 INFO L479 AbstractCegarLoop]: Abstraction has 4629 states and 7749 transitions. [2020-10-14 22:57:37,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:57:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7749 transitions. [2020-10-14 22:57:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 22:57:37,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:37,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:57:37,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:57:37,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1335275623, now seen corresponding path program 1 times [2020-10-14 22:57:37,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:37,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437192811] [2020-10-14 22:57:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 22:57:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:57:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-14 22:57:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:39,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:57:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 22:57:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:57:39,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:39,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:57:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:39,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:57:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:57:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:57:39,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:39,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:57:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:57:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:57:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:57:39,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437192811] [2020-10-14 22:57:39,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:57:39,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:57:39,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810960827] [2020-10-14 22:57:39,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:57:39,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:57:39,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:57:39,587 INFO L87 Difference]: Start difference. First operand 4629 states and 7749 transitions. Second operand 6 states. [2020-10-14 22:58:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:58:10,317 INFO L93 Difference]: Finished difference Result 13676 states and 23265 transitions. [2020-10-14 22:58:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:58:10,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 22:58:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:58:10,373 INFO L225 Difference]: With dead ends: 13676 [2020-10-14 22:58:10,373 INFO L226 Difference]: Without dead ends: 9053 [2020-10-14 22:58:10,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:58:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9053 states. [2020-10-14 22:58:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9053 to 8979. [2020-10-14 22:58:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8979 states. [2020-10-14 22:58:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8979 states to 8979 states and 13209 transitions. [2020-10-14 22:58:10,645 INFO L78 Accepts]: Start accepts. Automaton has 8979 states and 13209 transitions. Word has length 146 [2020-10-14 22:58:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:58:10,647 INFO L479 AbstractCegarLoop]: Abstraction has 8979 states and 13209 transitions. [2020-10-14 22:58:10,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:58:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8979 states and 13209 transitions. [2020-10-14 22:58:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 22:58:10,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:58:10,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:58:10,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:58:10,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:58:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:58:10,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1439380389, now seen corresponding path program 1 times [2020-10-14 22:58:10,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:58:10,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315944418] [2020-10-14 22:58:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:58:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:12,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:12,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 22:58:12,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:58:12,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-10-14 22:58:12,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:12,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:58:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:58:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:58:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:58:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:58:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:58:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:12,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:58:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:58:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:58:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:58:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:12,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 22:58:12,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 22:58:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:12,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:58:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:58:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:58:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:58:12,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315944418] [2020-10-14 22:58:12,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:58:12,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:58:12,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469237904] [2020-10-14 22:58:12,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:58:12,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:58:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:58:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:58:12,650 INFO L87 Difference]: Start difference. First operand 8979 states and 13209 transitions. Second operand 7 states. [2020-10-14 22:58:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:58:50,065 INFO L93 Difference]: Finished difference Result 27207 states and 40976 transitions. [2020-10-14 22:58:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:58:50,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-14 22:58:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:58:50,140 INFO L225 Difference]: With dead ends: 27207 [2020-10-14 22:58:50,140 INFO L226 Difference]: Without dead ends: 18234 [2020-10-14 22:58:50,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:58:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2020-10-14 22:58:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 18062. [2020-10-14 22:58:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18062 states. [2020-10-14 22:58:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18062 states to 18062 states and 26339 transitions. [2020-10-14 22:58:50,597 INFO L78 Accepts]: Start accepts. Automaton has 18062 states and 26339 transitions. Word has length 149 [2020-10-14 22:58:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:58:50,598 INFO L479 AbstractCegarLoop]: Abstraction has 18062 states and 26339 transitions. [2020-10-14 22:58:50,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:58:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 18062 states and 26339 transitions. [2020-10-14 22:58:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 22:58:50,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:58:50,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-14 22:58:50,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:58:50,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:58:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:58:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1933632015, now seen corresponding path program 1 times [2020-10-14 22:58:50,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:58:50,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895685240] [2020-10-14 22:58:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:58:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 22:58:52,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:58:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-14 22:58:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:52,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:58:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:58:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:58:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:58:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:58:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:58:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:52,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:58:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:58:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:58:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:58:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:52,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:52,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:58:52,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:52,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 22:58:52,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:52,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:58:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:58:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:58:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:58:52,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895685240] [2020-10-14 22:58:52,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:58:52,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:58:52,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115821812] [2020-10-14 22:58:52,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:58:52,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:58:52,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:58:52,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:58:52,999 INFO L87 Difference]: Start difference. First operand 18062 states and 26339 transitions. Second operand 7 states. [2020-10-14 22:59:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:59:37,607 INFO L93 Difference]: Finished difference Result 42940 states and 63170 transitions. [2020-10-14 22:59:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:59:37,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 22:59:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:59:37,805 INFO L225 Difference]: With dead ends: 42940 [2020-10-14 22:59:37,806 INFO L226 Difference]: Without dead ends: 24884 [2020-10-14 22:59:37,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:59:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24884 states. [2020-10-14 22:59:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24884 to 22832. [2020-10-14 22:59:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2020-10-14 22:59:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 31916 transitions. [2020-10-14 22:59:38,377 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 31916 transitions. Word has length 169 [2020-10-14 22:59:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:59:38,377 INFO L479 AbstractCegarLoop]: Abstraction has 22832 states and 31916 transitions. [2020-10-14 22:59:38,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:59:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 31916 transitions. [2020-10-14 22:59:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 22:59:38,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:59:38,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-14 22:59:38,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:59:38,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:59:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:59:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1420894090, now seen corresponding path program 1 times [2020-10-14 22:59:38,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:59:38,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114639496] [2020-10-14 22:59:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:59:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:39,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 22:59:39,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:59:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-14 22:59:39,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:39,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:59:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:59:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:59:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:59:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:59:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:39,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:59:39,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:59:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:59:39,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:39,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:59:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:59:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:59:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:59:39,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:59:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 22:59:39,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:59:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 22:59:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:39,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:59:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:59:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 22:59:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:59:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:59:40,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114639496] [2020-10-14 22:59:40,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:59:40,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:59:40,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516283482] [2020-10-14 22:59:40,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:59:40,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:59:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:59:40,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:59:40,146 INFO L87 Difference]: Start difference. First operand 22832 states and 31916 transitions. Second operand 7 states. [2020-10-14 23:00:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:00:57,673 INFO L93 Difference]: Finished difference Result 67842 states and 103720 transitions. [2020-10-14 23:00:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:00:57,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 23:00:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:00:57,895 INFO L225 Difference]: With dead ends: 67842 [2020-10-14 23:00:57,896 INFO L226 Difference]: Without dead ends: 45016 [2020-10-14 23:00:57,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:00:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45016 states. [2020-10-14 23:00:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45016 to 44280. [2020-10-14 23:00:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44280 states. [2020-10-14 23:00:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44280 states to 44280 states and 59186 transitions. [2020-10-14 23:00:59,109 INFO L78 Accepts]: Start accepts. Automaton has 44280 states and 59186 transitions. Word has length 232 [2020-10-14 23:00:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:00:59,110 INFO L479 AbstractCegarLoop]: Abstraction has 44280 states and 59186 transitions. [2020-10-14 23:00:59,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:00:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 44280 states and 59186 transitions. [2020-10-14 23:00:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-14 23:00:59,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:00:59,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-14 23:00:59,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:00:59,120 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:00:59,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:00:59,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2002477895, now seen corresponding path program 1 times [2020-10-14 23:00:59,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:00:59,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876790523] [2020-10-14 23:00:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:00:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:00:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:00:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:00:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking...