/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:56:42,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:56:42,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:56:42,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:56:42,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:56:42,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:56:42,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:56:42,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:56:42,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:56:42,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:56:42,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:56:42,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:56:42,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:56:42,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:56:42,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:56:42,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:56:42,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:56:42,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:56:42,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:56:42,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:56:42,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:56:42,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:56:42,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:56:42,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:56:43,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:56:43,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:56:43,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:56:43,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:56:43,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:56:43,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:56:43,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:56:43,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:56:43,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:56:43,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:56:43,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:56:43,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:56:43,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:56:43,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:56:43,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:56:43,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:56:43,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:56:43,017 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 22:56:43,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:56:43,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:56:43,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:56:43,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:56:43,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:56:43,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:56:43,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:56:43,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:56:43,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:56:43,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:56:43,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:56:43,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:56:43,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:56:43,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:56:43,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:56:43,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:56:43,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:56:43,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:56:43,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:56:43,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:56:43,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:56:43,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:56:43,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:56:43,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:56:43,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:56:43,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:56:43,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:56:43,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:56:43,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:56:43,070 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 22:56:43,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:56:43,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:56:43,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:56:43,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:56:43,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:56:43,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-14 22:56:43,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa55ab4e7/a6ba0d8577a140558325a2cf4a871b6f/FLAG48b72d677 [2020-10-14 22:56:44,369 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:56:44,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-14 22:56:44,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa55ab4e7/a6ba0d8577a140558325a2cf4a871b6f/FLAG48b72d677 [2020-10-14 22:56:44,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa55ab4e7/a6ba0d8577a140558325a2cf4a871b6f [2020-10-14 22:56:44,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:56:44,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:56:44,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:56:44,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:56:44,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:56:44,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:56:44" (1/1) ... [2020-10-14 22:56:44,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339faaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:44, skipping insertion in model container [2020-10-14 22:56:44,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:56:44" (1/1) ... [2020-10-14 22:56:44,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:56:45,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:56:47,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:56:47,322 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:56:48,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:56:48,339 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:56:48,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48 WrapperNode [2020-10-14 22:56:48,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:56:48,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:56:48,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:56:48,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:56:48,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (1/1) ... [2020-10-14 22:56:48,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:56:48,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:56:48,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:56:48,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:56:48,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (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 22:56:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:56:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:56:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:56:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:56:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:56:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 22:56:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 22:56:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 22:56:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 22:56:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 22:56:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:56:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:56:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:56:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:56:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:56:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:57:00,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:57:00,939 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:57:00,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:57:00 BoogieIcfgContainer [2020-10-14 22:57:00,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:57:00,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:57:00,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:57:00,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:57:00,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:56:44" (1/3) ... [2020-10-14 22:57:00,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730e12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:57:00, skipping insertion in model container [2020-10-14 22:57:00,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:56:48" (2/3) ... [2020-10-14 22:57:00,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5730e12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:57:00, skipping insertion in model container [2020-10-14 22:57:00,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:57:00" (3/3) ... [2020-10-14 22:57:00,961 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label03.c [2020-10-14 22:57:00,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:57:00,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:57:01,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:57:01,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:57:01,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:57:01,034 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:57:01,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:57:01,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:57:01,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:57:01,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:57:01,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:57:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 22:57:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 22:57:01,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:01,099 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] [2020-10-14 22:57:01,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:01,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:01,108 INFO L82 PathProgramCache]: Analyzing trace with hash 52435620, now seen corresponding path program 1 times [2020-10-14 22:57:01,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:01,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759389102] [2020-10-14 22:57:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:01,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:57:01,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-14 22:57:02,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:02,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:57:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:57:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:57:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:57:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:02,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:02,229 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 22:57:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759389102] [2020-10-14 22:57:02,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:57:02,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:57:02,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670847850] [2020-10-14 22:57:02,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:57:02,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:57:02,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:57:02,270 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 22:57:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:57:27,318 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 22:57:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:57:27,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 22:57:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:57:27,362 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 22:57:27,363 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 22:57:27,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:57:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 22:57:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 22:57:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 22:57:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 22:57:27,662 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 63 [2020-10-14 22:57:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:57:27,662 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 22:57:27,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:57:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 22:57:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 22:57:27,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:57:27,669 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, 1, 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 22:57:27,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:57:27,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:57:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:57:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -412527432, now seen corresponding path program 1 times [2020-10-14 22:57:27,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:57:27,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344481135] [2020-10-14 22:57:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:57:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:29,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:57:29,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:57:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-14 22:57:29,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:29,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:57:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:57:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:57:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:57:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:57:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:29,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:29,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:57:29,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:57:29,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:57:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:57:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:57:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:57:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:57:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:57:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:57:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:57:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:57:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 22:57:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:57:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:57:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:57:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:57:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:57:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:57:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:57:29,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344481135] [2020-10-14 22:57:29,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:57:29,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:57:29,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481772239] [2020-10-14 22:57:29,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:57:29,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:57:29,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:57:29,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:57:29,650 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 7 states. [2020-10-14 22:58:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:58:04,754 INFO L93 Difference]: Finished difference Result 9453 states and 16320 transitions. [2020-10-14 22:58:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:58:04,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 22:58:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:58:04,792 INFO L225 Difference]: With dead ends: 9453 [2020-10-14 22:58:04,792 INFO L226 Difference]: Without dead ends: 6260 [2020-10-14 22:58:04,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 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 22:58:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2020-10-14 22:58:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 6124. [2020-10-14 22:58:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6124 states. [2020-10-14 22:58:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 8999 transitions. [2020-10-14 22:58:04,982 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 8999 transitions. Word has length 135 [2020-10-14 22:58:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:58:04,985 INFO L479 AbstractCegarLoop]: Abstraction has 6124 states and 8999 transitions. [2020-10-14 22:58:04,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:58:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 8999 transitions. [2020-10-14 22:58:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 22:58:04,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:58:05,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:05,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:58:05,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:58:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:58:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2077003174, now seen corresponding path program 1 times [2020-10-14 22:58:05,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:58:05,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052041288] [2020-10-14 22:58:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:58:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:05,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:05,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:58:05,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-14 22:58:05,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:05,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:58:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:58:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:58:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:05,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:58:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:58:05,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:58:05,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:05,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:58:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:58:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:58:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:58:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 22:58:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:58:05,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:05,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:58:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:58:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:58:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:58:05,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052041288] [2020-10-14 22:58:05,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:58:05,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:58:05,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298272233] [2020-10-14 22:58:05,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:58:05,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:58:05,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:58:05,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:58:05,850 INFO L87 Difference]: Start difference. First operand 6124 states and 8999 transitions. Second operand 7 states. [2020-10-14 22:58:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:58:47,422 INFO L93 Difference]: Finished difference Result 18392 states and 27285 transitions. [2020-10-14 22:58:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:58:47,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-14 22:58:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:58:47,484 INFO L225 Difference]: With dead ends: 18392 [2020-10-14 22:58:47,484 INFO L226 Difference]: Without dead ends: 12274 [2020-10-14 22:58:47,499 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 22:58:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12274 states. [2020-10-14 22:58:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12274 to 12033. [2020-10-14 22:58:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12033 states. [2020-10-14 22:58:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12033 states to 12033 states and 17201 transitions. [2020-10-14 22:58:47,807 INFO L78 Accepts]: Start accepts. Automaton has 12033 states and 17201 transitions. Word has length 144 [2020-10-14 22:58:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:58:47,809 INFO L479 AbstractCegarLoop]: Abstraction has 12033 states and 17201 transitions. [2020-10-14 22:58:47,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:58:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12033 states and 17201 transitions. [2020-10-14 22:58:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 22:58:47,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:58:47,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:47,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:58:47,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:58:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:58:47,812 INFO L82 PathProgramCache]: Analyzing trace with hash 883220272, now seen corresponding path program 1 times [2020-10-14 22:58:47,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:58:47,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912704990] [2020-10-14 22:58:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:58:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:49,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:58:49,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:58:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-14 22:58:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:49,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:58:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:58:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:58:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:58:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:49,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:49,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:58:49,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:58:49,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:49,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:58:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:58:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:58:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:58:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:58:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:58:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:58:50,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:58:50,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:58:50,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:58:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 22:58:50,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:58:50,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:58:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:58:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:58:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:58:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:58:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:58:50,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912704990] [2020-10-14 22:58:50,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:58:50,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:58:50,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327399993] [2020-10-14 22:58:50,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:58:50,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:58:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:58:50,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:58:50,130 INFO L87 Difference]: Start difference. First operand 12033 states and 17201 transitions. Second operand 7 states. [2020-10-14 22:59:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:59:51,297 INFO L93 Difference]: Finished difference Result 36566 states and 53272 transitions. [2020-10-14 22:59:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:59:51,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-14 22:59:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:59:51,411 INFO L225 Difference]: With dead ends: 36566 [2020-10-14 22:59:51,411 INFO L226 Difference]: Without dead ends: 24539 [2020-10-14 22:59:51,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:59:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24539 states. [2020-10-14 22:59:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24539 to 24052. [2020-10-14 22:59:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24052 states. [2020-10-14 22:59:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24052 states to 24052 states and 31149 transitions. [2020-10-14 22:59:52,083 INFO L78 Accepts]: Start accepts. Automaton has 24052 states and 31149 transitions. Word has length 164 [2020-10-14 22:59:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:59:52,084 INFO L479 AbstractCegarLoop]: Abstraction has 24052 states and 31149 transitions. [2020-10-14 22:59:52,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:59:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 24052 states and 31149 transitions. [2020-10-14 22:59:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 22:59:52,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:59:52,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:52,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:59:52,090 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:59:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:59:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1055147627, now seen corresponding path program 1 times [2020-10-14 22:59:52,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:59:52,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141568247] [2020-10-14 22:59:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:59:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:52,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:54,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:54,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 22:59:54,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:59:54,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-10-14 22:59:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:54,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:59:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:59:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 22:59:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:59:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:59:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:59:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:59:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:59:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:54,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:59:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:59:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:59:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:59:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:59:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:59:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:59:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:59:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 22:59:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:59:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 22:59:54,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:59:54,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:59:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:59:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:59:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 22:59:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:59:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:59:55,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141568247] [2020-10-14 22:59:55,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:59:55,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:59:55,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595541335] [2020-10-14 22:59:55,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:59:55,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:59:55,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:59:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:59:55,100 INFO L87 Difference]: Start difference. First operand 24052 states and 31149 transitions. Second operand 7 states.