/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:23:21,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:23:21,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:23:21,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:23:21,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:23:21,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:23:21,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:23:21,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:23:21,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:23:21,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:23:21,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:23:21,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:23:21,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:23:21,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:23:21,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:23:21,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:23:21,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:23:21,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:23:21,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:23:21,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:23:21,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:23:21,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:23:21,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:23:21,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:23:21,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:23:21,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:23:21,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:23:21,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:23:21,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:23:21,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:23:21,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:23:21,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:23:21,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:23:22,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:23:22,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:23:22,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:23:22,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:23:22,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:23:22,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:23:22,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:23:22,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:23:22,017 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 08:23:22,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:23:22,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:23:22,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:23:22,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:23:22,062 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:23:22,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:23:22,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:23:22,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:23:22,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:23:22,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:23:22,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:23:22,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:23:22,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:23:22,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:23:22,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:23:22,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:23:22,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:23:22,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:23:22,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:23:22,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:23:22,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:23:22,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:23:22,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:23:22,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:23:22,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:23:22,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:23:22,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:23:22,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:23:22,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:23:22,068 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:23:22,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:23:22,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:23:22,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:23:22,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:23:22,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:23:22,415 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:23:22,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0137fea/4eb7a6aeb39241f094ae439d5d2f1251/FLAG0001ccbc3 [2020-10-14 08:23:23,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:23:23,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:23:23,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0137fea/4eb7a6aeb39241f094ae439d5d2f1251/FLAG0001ccbc3 [2020-10-14 08:23:23,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0137fea/4eb7a6aeb39241f094ae439d5d2f1251 [2020-10-14 08:23:23,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:23:23,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:23:23,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:23:23,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:23:23,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:23:23,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:23:23" (1/1) ... [2020-10-14 08:23:23,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:23, skipping insertion in model container [2020-10-14 08:23:23,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:23:23" (1/1) ... [2020-10-14 08:23:23,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:23:23,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:23:23,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:23:24,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:23:24,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:23:24,510 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:23:24,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24 WrapperNode [2020-10-14 08:23:24,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:23:24,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:23:24,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:23:24,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:23:24,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (1/1) ... [2020-10-14 08:23:24,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:23:24,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:23:24,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:23:24,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:23:24,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (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 08:23:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:23:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:23:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:23:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:23:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:23:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:23:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:23:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:23:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:23:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:23:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:23:26,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:23:26,178 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:23:26,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:23:26 BoogieIcfgContainer [2020-10-14 08:23:26,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:23:26,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:23:26,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:23:26,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:23:26,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:23:23" (1/3) ... [2020-10-14 08:23:26,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5061f19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:23:26, skipping insertion in model container [2020-10-14 08:23:26,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:24" (2/3) ... [2020-10-14 08:23:26,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5061f19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:23:26, skipping insertion in model container [2020-10-14 08:23:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:23:26" (3/3) ... [2020-10-14 08:23:26,195 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:23:26,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:23:26,215 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-14 08:23:26,230 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-14 08:23:26,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:23:26,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:23:26,260 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:23:26,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:23:26,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:23:26,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:23:26,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:23:26,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:23:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2020-10-14 08:23:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:23:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:26,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:26,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2082265188, now seen corresponding path program 1 times [2020-10-14 08:23:26,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:26,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854885179] [2020-10-14 08:23:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:28,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:31,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 08:23:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:23:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 08:23:31,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:31,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:23:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:23:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 08:23:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:23:32,360 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:23:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:32,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:32,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:23:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:32,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:32,428 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 08:23:32,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854885179] [2020-10-14 08:23:32,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:32,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:23:32,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919230615] [2020-10-14 08:23:32,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:23:32,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:23:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:32,463 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 4 states. [2020-10-14 08:23:32,809 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:23:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:35,226 INFO L93 Difference]: Finished difference Result 693 states and 1231 transitions. [2020-10-14 08:23:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:23:35,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-14 08:23:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:35,250 INFO L225 Difference]: With dead ends: 693 [2020-10-14 08:23:35,250 INFO L226 Difference]: Without dead ends: 546 [2020-10-14 08:23:35,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:23:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-14 08:23:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-10-14 08:23:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-14 08:23:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 792 transitions. [2020-10-14 08:23:35,342 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 792 transitions. Word has length 142 [2020-10-14 08:23:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:35,343 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 792 transitions. [2020-10-14 08:23:35,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:23:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 792 transitions. [2020-10-14 08:23:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:23:35,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:35,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:35,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:23:35,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:35,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:35,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1072689884, now seen corresponding path program 1 times [2020-10-14 08:23:35,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:35,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144027514] [2020-10-14 08:23:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 08:23:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:23:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 08:23:40,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:40,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:23:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 08:23:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 08:23:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:40,748 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:23:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:40,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:23:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:40,803 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 08:23:40,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144027514] [2020-10-14 08:23:40,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:40,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:23:40,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683033045] [2020-10-14 08:23:40,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:23:40,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:23:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:40,808 INFO L87 Difference]: Start difference. First operand 544 states and 792 transitions. Second operand 4 states. [2020-10-14 08:23:41,075 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:23:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:42,994 INFO L93 Difference]: Finished difference Result 1097 states and 1656 transitions. [2020-10-14 08:23:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:23:42,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-14 08:23:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:43,008 INFO L225 Difference]: With dead ends: 1097 [2020-10-14 08:23:43,009 INFO L226 Difference]: Without dead ends: 896 [2020-10-14 08:23:43,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:23:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-14 08:23:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 894. [2020-10-14 08:23:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 08:23:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1327 transitions. [2020-10-14 08:23:43,083 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1327 transitions. Word has length 142 [2020-10-14 08:23:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:43,083 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1327 transitions. [2020-10-14 08:23:43,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:23:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1327 transitions. [2020-10-14 08:23:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 08:23:43,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:43,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:43,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:23:43,087 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1072351260, now seen corresponding path program 1 times [2020-10-14 08:23:43,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:43,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086862398] [2020-10-14 08:23:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 08:23:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:23:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:23:48,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:48,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:23:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:23:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 08:23:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:48,595 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:23:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:23:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:48,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:48,707 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 08:23:48,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086862398] [2020-10-14 08:23:48,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:23:48,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890145292] [2020-10-14 08:23:48,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:23:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:23:48,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:23:48,723 INFO L87 Difference]: Start difference. First operand 894 states and 1327 transitions. Second operand 5 states. [2020-10-14 08:23:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:52,718 INFO L93 Difference]: Finished difference Result 2533 states and 3761 transitions. [2020-10-14 08:23:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:23:52,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 08:23:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:52,730 INFO L225 Difference]: With dead ends: 2533 [2020-10-14 08:23:52,730 INFO L226 Difference]: Without dead ends: 1722 [2020-10-14 08:23:52,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:23:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-14 08:23:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1696. [2020-10-14 08:23:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2020-10-14 08:23:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2500 transitions. [2020-10-14 08:23:52,857 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2500 transitions. Word has length 142 [2020-10-14 08:23:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:52,858 INFO L479 AbstractCegarLoop]: Abstraction has 1696 states and 2500 transitions. [2020-10-14 08:23:52,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:23:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2500 transitions. [2020-10-14 08:23:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 08:23:52,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:52,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:52,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:23:52,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1304987853, now seen corresponding path program 1 times [2020-10-14 08:23:52,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:52,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310682515] [2020-10-14 08:23:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:57,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:57,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 08:23:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:23:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:23:57,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:57,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:23:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:23:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:23:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:58,354 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:23:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:58,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:58,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:58,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:23:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:58,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:23:58,434 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 08:23:58,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310682515] [2020-10-14 08:23:58,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:58,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:23:58,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182119982] [2020-10-14 08:23:58,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:23:58,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:23:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:58,439 INFO L87 Difference]: Start difference. First operand 1696 states and 2500 transitions. Second operand 4 states. [2020-10-14 08:24:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:01,892 INFO L93 Difference]: Finished difference Result 5038 states and 7420 transitions. [2020-10-14 08:24:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:01,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-14 08:24:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:01,915 INFO L225 Difference]: With dead ends: 5038 [2020-10-14 08:24:01,915 INFO L226 Difference]: Without dead ends: 3370 [2020-10-14 08:24:01,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2020-10-14 08:24:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 1702. [2020-10-14 08:24:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2020-10-14 08:24:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2508 transitions. [2020-10-14 08:24:02,046 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2508 transitions. Word has length 143 [2020-10-14 08:24:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:02,047 INFO L479 AbstractCegarLoop]: Abstraction has 1702 states and 2508 transitions. [2020-10-14 08:24:02,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2508 transitions. [2020-10-14 08:24:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 08:24:02,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:02,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:02,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:24:02,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash 705211805, now seen corresponding path program 1 times [2020-10-14 08:24:02,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:02,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280333628] [2020-10-14 08:24:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:07,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:07,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 08:24:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:24:07,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:24:07,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:07,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 08:24:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:07,525 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:07,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:07,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:07,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:24:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:07,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:07,615 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 08:24:07,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280333628] [2020-10-14 08:24:07,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:07,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:07,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818267318] [2020-10-14 08:24:07,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:07,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:07,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:07,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:07,617 INFO L87 Difference]: Start difference. First operand 1702 states and 2508 transitions. Second operand 5 states. [2020-10-14 08:24:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:11,116 INFO L93 Difference]: Finished difference Result 4815 states and 7100 transitions. [2020-10-14 08:24:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:11,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-14 08:24:11,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:11,134 INFO L225 Difference]: With dead ends: 4815 [2020-10-14 08:24:11,134 INFO L226 Difference]: Without dead ends: 3293 [2020-10-14 08:24:11,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-14 08:24:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3237. [2020-10-14 08:24:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-10-14 08:24:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4726 transitions. [2020-10-14 08:24:11,345 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4726 transitions. Word has length 144 [2020-10-14 08:24:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:11,348 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4726 transitions. [2020-10-14 08:24:11,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4726 transitions. [2020-10-14 08:24:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 08:24:11,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:11,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:11,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:24:11,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash -735488210, now seen corresponding path program 1 times [2020-10-14 08:24:11,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:11,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204803582] [2020-10-14 08:24:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:16,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:16,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 08:24:16,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:24:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:24:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:16,776 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:16,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:16,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:16,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:24:16,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:16,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:16,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204803582] [2020-10-14 08:24:16,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:16,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:16,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617041733] [2020-10-14 08:24:16,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:16,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:16,855 INFO L87 Difference]: Start difference. First operand 3237 states and 4726 transitions. Second operand 4 states. [2020-10-14 08:24:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:19,949 INFO L93 Difference]: Finished difference Result 9545 states and 13906 transitions. [2020-10-14 08:24:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:19,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-14 08:24:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:19,977 INFO L225 Difference]: With dead ends: 9545 [2020-10-14 08:24:19,977 INFO L226 Difference]: Without dead ends: 6397 [2020-10-14 08:24:19,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2020-10-14 08:24:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 3249. [2020-10-14 08:24:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3249 states. [2020-10-14 08:24:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 4742 transitions. [2020-10-14 08:24:20,341 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 4742 transitions. Word has length 145 [2020-10-14 08:24:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:20,341 INFO L479 AbstractCegarLoop]: Abstraction has 3249 states and 4742 transitions. [2020-10-14 08:24:20,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 4742 transitions. [2020-10-14 08:24:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 08:24:20,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:20,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:20,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:24:20,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash -989616226, now seen corresponding path program 1 times [2020-10-14 08:24:20,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:20,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978817662] [2020-10-14 08:24:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:25,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 08:24:25,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:24:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:24:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:25,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:24:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:25,880 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:25,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:24:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:25,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:25,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:25,993 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 08:24:25,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978817662] [2020-10-14 08:24:25,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:25,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:25,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22096672] [2020-10-14 08:24:25,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:25,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:25,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:25,998 INFO L87 Difference]: Start difference. First operand 3249 states and 4742 transitions. Second operand 5 states. [2020-10-14 08:24:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:28,925 INFO L93 Difference]: Finished difference Result 8878 states and 12903 transitions. [2020-10-14 08:24:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:28,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 08:24:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:28,948 INFO L225 Difference]: With dead ends: 8878 [2020-10-14 08:24:28,948 INFO L226 Difference]: Without dead ends: 5642 [2020-10-14 08:24:28,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2020-10-14 08:24:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5611. [2020-10-14 08:24:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5611 states. [2020-10-14 08:24:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 8071 transitions. [2020-10-14 08:24:29,410 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 8071 transitions. Word has length 146 [2020-10-14 08:24:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:29,410 INFO L479 AbstractCegarLoop]: Abstraction has 5611 states and 8071 transitions. [2020-10-14 08:24:29,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 8071 transitions. [2020-10-14 08:24:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 08:24:29,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:29,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:29,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:24:29,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1015203341, now seen corresponding path program 1 times [2020-10-14 08:24:29,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:29,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729802617] [2020-10-14 08:24:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:34,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:34,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 08:24:34,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:24:34,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:24:34,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:34,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:24:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:24:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:34,803 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:34,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:34,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:34,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:34,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:34,851 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 08:24:34,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729802617] [2020-10-14 08:24:34,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:34,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126598559] [2020-10-14 08:24:34,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:34,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:34,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:34,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:34,859 INFO L87 Difference]: Start difference. First operand 5611 states and 8071 transitions. Second operand 4 states. [2020-10-14 08:24:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:37,102 INFO L93 Difference]: Finished difference Result 16721 states and 24049 transitions. [2020-10-14 08:24:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:37,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-14 08:24:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:37,143 INFO L225 Difference]: With dead ends: 16721 [2020-10-14 08:24:37,143 INFO L226 Difference]: Without dead ends: 11175 [2020-10-14 08:24:37,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11175 states. [2020-10-14 08:24:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11175 to 5614. [2020-10-14 08:24:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5614 states. [2020-10-14 08:24:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 8075 transitions. [2020-10-14 08:24:37,610 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 8075 transitions. Word has length 147 [2020-10-14 08:24:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:37,611 INFO L479 AbstractCegarLoop]: Abstraction has 5614 states and 8075 transitions. [2020-10-14 08:24:37,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 8075 transitions. [2020-10-14 08:24:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 08:24:37,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:37,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:37,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:24:37,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:37,622 INFO L82 PathProgramCache]: Analyzing trace with hash -778942262, now seen corresponding path program 1 times [2020-10-14 08:24:37,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:37,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091070751] [2020-10-14 08:24:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:24:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:42,966 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:42,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:24:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:42,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:43,011 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 08:24:43,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091070751] [2020-10-14 08:24:43,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:43,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:43,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025882000] [2020-10-14 08:24:43,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:43,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:43,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:43,013 INFO L87 Difference]: Start difference. First operand 5614 states and 8075 transitions. Second operand 5 states. [2020-10-14 08:24:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:45,996 INFO L93 Difference]: Finished difference Result 15181 states and 21707 transitions. [2020-10-14 08:24:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:45,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 08:24:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:46,026 INFO L225 Difference]: With dead ends: 15181 [2020-10-14 08:24:46,027 INFO L226 Difference]: Without dead ends: 9710 [2020-10-14 08:24:46,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9710 states. [2020-10-14 08:24:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9710 to 9639. [2020-10-14 08:24:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2020-10-14 08:24:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 13643 transitions. [2020-10-14 08:24:46,814 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 13643 transitions. Word has length 148 [2020-10-14 08:24:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:46,814 INFO L479 AbstractCegarLoop]: Abstraction has 9639 states and 13643 transitions. [2020-10-14 08:24:46,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 13643 transitions. [2020-10-14 08:24:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 08:24:46,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:46,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:46,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:24:46,832 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:46,832 INFO L82 PathProgramCache]: Analyzing trace with hash 209007583, now seen corresponding path program 1 times [2020-10-14 08:24:46,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:46,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395030585] [2020-10-14 08:24:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:51,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:24:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:24:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:52,197 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:24:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:52,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:52,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:52,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395030585] [2020-10-14 08:24:52,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:52,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:52,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978226793] [2020-10-14 08:24:52,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:52,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:52,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:52,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:52,243 INFO L87 Difference]: Start difference. First operand 9639 states and 13643 transitions. Second operand 5 states. [2020-10-14 08:24:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:54,314 INFO L93 Difference]: Finished difference Result 16728 states and 23676 transitions. [2020-10-14 08:24:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:54,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 08:24:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:54,331 INFO L225 Difference]: With dead ends: 16728 [2020-10-14 08:24:54,331 INFO L226 Difference]: Without dead ends: 7145 [2020-10-14 08:24:54,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2020-10-14 08:24:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 7145. [2020-10-14 08:24:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7145 states. [2020-10-14 08:24:54,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 10113 transitions. [2020-10-14 08:24:54,840 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 10113 transitions. Word has length 148 [2020-10-14 08:24:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:54,840 INFO L479 AbstractCegarLoop]: Abstraction has 7145 states and 10113 transitions. [2020-10-14 08:24:54,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 10113 transitions. [2020-10-14 08:24:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:24:54,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:54,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:54,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:24:54,850 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:54,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1484154424, now seen corresponding path program 1 times [2020-10-14 08:24:54,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:54,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453789882] [2020-10-14 08:24:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:54,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:24:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:24:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:00,197 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:00,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:00,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:00,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:00,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:25:00,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:00,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:00,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:00,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453789882] [2020-10-14 08:25:00,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:00,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:00,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532890847] [2020-10-14 08:25:00,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:00,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:00,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:00,244 INFO L87 Difference]: Start difference. First operand 7145 states and 10113 transitions. Second operand 5 states. [2020-10-14 08:25:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:02,206 INFO L93 Difference]: Finished difference Result 11877 states and 16800 transitions. [2020-10-14 08:25:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:02,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 08:25:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:02,218 INFO L225 Difference]: With dead ends: 11877 [2020-10-14 08:25:02,218 INFO L226 Difference]: Without dead ends: 6331 [2020-10-14 08:25:02,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2020-10-14 08:25:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 6331. [2020-10-14 08:25:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-14 08:25:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 8960 transitions. [2020-10-14 08:25:02,789 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 8960 transitions. Word has length 153 [2020-10-14 08:25:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:02,790 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 8960 transitions. [2020-10-14 08:25:02,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 8960 transitions. [2020-10-14 08:25:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 08:25:02,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:02,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:02,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:25:02,796 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:02,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1496059211, now seen corresponding path program 1 times [2020-10-14 08:25:02,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:02,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741216026] [2020-10-14 08:25:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 08:25:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:25:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:25:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:08,098 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:08,130 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 08:25:08,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741216026] [2020-10-14 08:25:08,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:08,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:08,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796738037] [2020-10-14 08:25:08,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:08,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:08,132 INFO L87 Difference]: Start difference. First operand 6331 states and 8960 transitions. Second operand 4 states. [2020-10-14 08:25:08,410 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:25:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:10,937 INFO L93 Difference]: Finished difference Result 16397 states and 23554 transitions. [2020-10-14 08:25:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:10,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-14 08:25:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:10,949 INFO L225 Difference]: With dead ends: 16397 [2020-10-14 08:25:10,950 INFO L226 Difference]: Without dead ends: 12213 [2020-10-14 08:25:10,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2020-10-14 08:25:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 12147. [2020-10-14 08:25:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12147 states. [2020-10-14 08:25:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12147 states to 12147 states and 17214 transitions. [2020-10-14 08:25:11,667 INFO L78 Accepts]: Start accepts. Automaton has 12147 states and 17214 transitions. Word has length 156 [2020-10-14 08:25:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:11,667 INFO L479 AbstractCegarLoop]: Abstraction has 12147 states and 17214 transitions. [2020-10-14 08:25:11,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 12147 states and 17214 transitions. [2020-10-14 08:25:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 08:25:11,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:11,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:11,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:25:11,677 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash 448787366, now seen corresponding path program 1 times [2020-10-14 08:25:11,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:11,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302716364] [2020-10-14 08:25:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:16,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:16,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 08:25:16,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:25:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:25:16,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:16,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:25:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:25:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:17,038 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:17,088 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 08:25:17,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302716364] [2020-10-14 08:25:17,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:17,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295593885] [2020-10-14 08:25:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:17,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:17,090 INFO L87 Difference]: Start difference. First operand 12147 states and 17214 transitions. Second operand 5 states. [2020-10-14 08:25:19,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:19,363 INFO L93 Difference]: Finished difference Result 24252 states and 34368 transitions. [2020-10-14 08:25:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:19,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 08:25:19,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:19,376 INFO L225 Difference]: With dead ends: 24252 [2020-10-14 08:25:19,377 INFO L226 Difference]: Without dead ends: 12141 [2020-10-14 08:25:19,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12141 states. [2020-10-14 08:25:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12141 to 12141. [2020-10-14 08:25:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12141 states. [2020-10-14 08:25:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 17198 transitions. [2020-10-14 08:25:20,114 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 17198 transitions. Word has length 156 [2020-10-14 08:25:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:20,114 INFO L479 AbstractCegarLoop]: Abstraction has 12141 states and 17198 transitions. [2020-10-14 08:25:20,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 17198 transitions. [2020-10-14 08:25:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 08:25:20,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:20,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:20,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:25:20,124 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:20,124 INFO L82 PathProgramCache]: Analyzing trace with hash -584999080, now seen corresponding path program 1 times [2020-10-14 08:25:20,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:20,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965051038] [2020-10-14 08:25:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:25,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 08:25:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:25,514 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:25,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:25,568 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 08:25:25,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965051038] [2020-10-14 08:25:25,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:25,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:25,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98200632] [2020-10-14 08:25:25,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:25,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:25,570 INFO L87 Difference]: Start difference. First operand 12141 states and 17198 transitions. Second operand 5 states. [2020-10-14 08:25:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:29,990 INFO L93 Difference]: Finished difference Result 31261 states and 44212 transitions. [2020-10-14 08:25:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:29,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 08:25:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:30,009 INFO L225 Difference]: With dead ends: 31261 [2020-10-14 08:25:30,010 INFO L226 Difference]: Without dead ends: 19399 [2020-10-14 08:25:30,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19399 states. [2020-10-14 08:25:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19399 to 19347. [2020-10-14 08:25:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19347 states. [2020-10-14 08:25:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19347 states to 19347 states and 27017 transitions. [2020-10-14 08:25:31,189 INFO L78 Accepts]: Start accepts. Automaton has 19347 states and 27017 transitions. Word has length 156 [2020-10-14 08:25:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:31,189 INFO L479 AbstractCegarLoop]: Abstraction has 19347 states and 27017 transitions. [2020-10-14 08:25:31,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 19347 states and 27017 transitions. [2020-10-14 08:25:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 08:25:31,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:31,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:31,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:25:31,203 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1516000392, now seen corresponding path program 1 times [2020-10-14 08:25:31,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:31,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535403380] [2020-10-14 08:25:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:36,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 08:25:36,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:25:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:25:36,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:36,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:25:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:25:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:36,570 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:36,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:36,748 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 08:25:36,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535403380] [2020-10-14 08:25:36,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:36,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073150126] [2020-10-14 08:25:36,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:36,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:36,751 INFO L87 Difference]: Start difference. First operand 19347 states and 27017 transitions. Second operand 4 states. [2020-10-14 08:25:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:41,391 INFO L93 Difference]: Finished difference Result 48500 states and 67796 transitions. [2020-10-14 08:25:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:41,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-14 08:25:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:41,427 INFO L225 Difference]: With dead ends: 48500 [2020-10-14 08:25:41,428 INFO L226 Difference]: Without dead ends: 30482 [2020-10-14 08:25:41,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30482 states. [2020-10-14 08:25:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30482 to 30416. [2020-10-14 08:25:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30416 states. [2020-10-14 08:25:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30416 states to 30416 states and 41888 transitions. [2020-10-14 08:25:44,262 INFO L78 Accepts]: Start accepts. Automaton has 30416 states and 41888 transitions. Word has length 161 [2020-10-14 08:25:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:44,262 INFO L479 AbstractCegarLoop]: Abstraction has 30416 states and 41888 transitions. [2020-10-14 08:25:44,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30416 states and 41888 transitions. [2020-10-14 08:25:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 08:25:44,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:44,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:44,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:25:44,283 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash -653526109, now seen corresponding path program 1 times [2020-10-14 08:25:44,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:44,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932006504] [2020-10-14 08:25:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:49,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 08:25:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:49,625 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:25:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:49,669 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 08:25:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932006504] [2020-10-14 08:25:49,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:49,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:49,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861306549] [2020-10-14 08:25:49,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:49,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:49,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:49,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:49,672 INFO L87 Difference]: Start difference. First operand 30416 states and 41888 transitions. Second operand 5 states. [2020-10-14 08:25:49,955 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:25:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:56,286 INFO L93 Difference]: Finished difference Result 76873 states and 111842 transitions. [2020-10-14 08:25:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:25:56,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 08:25:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:56,352 INFO L225 Difference]: With dead ends: 76873 [2020-10-14 08:25:56,352 INFO L226 Difference]: Without dead ends: 59911 [2020-10-14 08:25:56,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59911 states. [2020-10-14 08:26:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59911 to 59907. [2020-10-14 08:26:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59907 states. [2020-10-14 08:26:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59907 states to 59907 states and 85701 transitions. [2020-10-14 08:26:00,680 INFO L78 Accepts]: Start accepts. Automaton has 59907 states and 85701 transitions. Word has length 164 [2020-10-14 08:26:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:00,681 INFO L479 AbstractCegarLoop]: Abstraction has 59907 states and 85701 transitions. [2020-10-14 08:26:00,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 59907 states and 85701 transitions. [2020-10-14 08:26:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 08:26:00,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:00,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:00,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:26:00,699 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:00,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2096652123, now seen corresponding path program 1 times [2020-10-14 08:26:00,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:00,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391871585] [2020-10-14 08:26:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:05,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:05,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 08:26:05,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:26:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:06,056 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:06,093 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 08:26:06,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391871585] [2020-10-14 08:26:06,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:06,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:06,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085299952] [2020-10-14 08:26:06,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:06,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:06,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:06,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:06,095 INFO L87 Difference]: Start difference. First operand 59907 states and 85701 transitions. Second operand 5 states. [2020-10-14 08:26:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:11,790 INFO L93 Difference]: Finished difference Result 119634 states and 171140 transitions. [2020-10-14 08:26:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:11,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 08:26:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:11,858 INFO L225 Difference]: With dead ends: 119634 [2020-10-14 08:26:11,858 INFO L226 Difference]: Without dead ends: 59875 [2020-10-14 08:26:11,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59875 states. [2020-10-14 08:26:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59875 to 59869. [2020-10-14 08:26:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59869 states. [2020-10-14 08:26:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59869 states to 59869 states and 85629 transitions. [2020-10-14 08:26:16,386 INFO L78 Accepts]: Start accepts. Automaton has 59869 states and 85629 transitions. Word has length 164 [2020-10-14 08:26:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:16,386 INFO L479 AbstractCegarLoop]: Abstraction has 59869 states and 85629 transitions. [2020-10-14 08:26:16,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 59869 states and 85629 transitions. [2020-10-14 08:26:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 08:26:16,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:16,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:16,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:26:16,409 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:16,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1153761285, now seen corresponding path program 1 times [2020-10-14 08:26:16,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:16,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881202135] [2020-10-14 08:26:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:21,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:21,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 08:26:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:21,789 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:21,851 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 08:26:21,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881202135] [2020-10-14 08:26:21,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:21,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:21,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101916555] [2020-10-14 08:26:21,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:26:21,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:21,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:26:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:21,853 INFO L87 Difference]: Start difference. First operand 59869 states and 85629 transitions. Second operand 5 states. [2020-10-14 08:26:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:28,401 INFO L93 Difference]: Finished difference Result 97474 states and 139292 transitions. [2020-10-14 08:26:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:28,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 08:26:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:28,462 INFO L225 Difference]: With dead ends: 97474 [2020-10-14 08:26:28,462 INFO L226 Difference]: Without dead ends: 52772 [2020-10-14 08:26:28,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52772 states. [2020-10-14 08:26:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52772 to 52309. [2020-10-14 08:26:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52309 states. [2020-10-14 08:26:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52309 states to 52309 states and 74580 transitions. [2020-10-14 08:26:34,117 INFO L78 Accepts]: Start accepts. Automaton has 52309 states and 74580 transitions. Word has length 164 [2020-10-14 08:26:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:34,117 INFO L479 AbstractCegarLoop]: Abstraction has 52309 states and 74580 transitions. [2020-10-14 08:26:34,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:26:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52309 states and 74580 transitions. [2020-10-14 08:26:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 08:26:34,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:34,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:34,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:26:34,139 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1280181964, now seen corresponding path program 1 times [2020-10-14 08:26:34,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:34,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506390238] [2020-10-14 08:26:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 08:26:39,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:26:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:26:39,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:39,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:26:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:26:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:26:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:26:39,618 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:26:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:39,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:39,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:39,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:26:39,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:39,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:39,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:26:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:39,692 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 08:26:39,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506390238] [2020-10-14 08:26:39,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:39,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:26:39,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550731221] [2020-10-14 08:26:39,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:26:39,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:26:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:39,695 INFO L87 Difference]: Start difference. First operand 52309 states and 74580 transitions. Second operand 6 states. [2020-10-14 08:26:39,988 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 08:26:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:48,828 INFO L93 Difference]: Finished difference Result 125569 states and 180234 transitions. [2020-10-14 08:26:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:26:48,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-10-14 08:26:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:48,917 INFO L225 Difference]: With dead ends: 125569 [2020-10-14 08:26:48,918 INFO L226 Difference]: Without dead ends: 74405 [2020-10-14 08:26:48,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:26:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74405 states. [2020-10-14 08:26:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74405 to 74397. [2020-10-14 08:26:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74397 states. [2020-10-14 08:26:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74397 states to 74397 states and 106080 transitions. [2020-10-14 08:26:56,713 INFO L78 Accepts]: Start accepts. Automaton has 74397 states and 106080 transitions. Word has length 169 [2020-10-14 08:26:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:56,713 INFO L479 AbstractCegarLoop]: Abstraction has 74397 states and 106080 transitions. [2020-10-14 08:26:56,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:26:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 74397 states and 106080 transitions. [2020-10-14 08:26:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 08:26:56,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:56,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:56,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:26:56,738 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1804021049, now seen corresponding path program 1 times [2020-10-14 08:26:56,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:56,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299819926] [2020-10-14 08:26:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking...