/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:01:38,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:01:38,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:01:38,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:01:38,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:01:38,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:01:38,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:01:38,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:01:38,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:01:38,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:01:38,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:01:38,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:01:38,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:01:38,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:01:38,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:01:38,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:01:38,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:01:38,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:01:38,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:01:38,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:01:38,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:01:38,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:01:38,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:01:38,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:01:38,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:01:38,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:01:38,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:01:38,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:01:38,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:01:38,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:01:38,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:01:38,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:01:38,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:01:38,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:01:38,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:01:38,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:01:38,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:01:38,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:01:38,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:01:38,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:01:38,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:01:38,572 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 [2020-10-15 03:01:38,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:01:38,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:01:38,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:01:38,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:01:38,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:01:38,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:01:38,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:01:38,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:01:38,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:01:38,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:01:38,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:01:38,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:01:38,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:01:38,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:01:38,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:01:38,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:01:38,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:01:38,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:01:38,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:01:38,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:01:38,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:01:38,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:01:38,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:01:38,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:01:38,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:01:38,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:01:38,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:01:38,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:01:38,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:01:38,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:01:39,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:01:39,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:01:39,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:01:39,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:01:39,167 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:01:39,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:01:39,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9f5bf7e/128b0c3199a6418abe3119cd2d225627/FLAGd085c8881 [2020-10-15 03:01:39,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:01:39,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:01:39,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9f5bf7e/128b0c3199a6418abe3119cd2d225627/FLAGd085c8881 [2020-10-15 03:01:40,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9f5bf7e/128b0c3199a6418abe3119cd2d225627 [2020-10-15 03:01:40,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:01:40,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:01:40,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:01:40,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:01:40,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:01:40,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40, skipping insertion in model container [2020-10-15 03:01:40,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:01:40,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:01:40,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:01:40,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:01:40,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:01:40,889 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:01:40,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40 WrapperNode [2020-10-15 03:01:40,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:01:40,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:01:40,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:01:40,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:01:40,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:40,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:41,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:41,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (1/1) ... [2020-10-15 03:01:41,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:01:41,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:01:41,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:01:41,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:01:41,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (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 [2020-10-15 03:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:01:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:01:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:01:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:01:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:01:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:01:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:01:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:01:42,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:01:42,349 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:01:42,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:42 BoogieIcfgContainer [2020-10-15 03:01:42,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:01:42,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:01:42,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:01:42,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:01:42,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:01:40" (1/3) ... [2020-10-15 03:01:42,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce8adcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:42, skipping insertion in model container [2020-10-15 03:01:42,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:40" (2/3) ... [2020-10-15 03:01:42,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce8adcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:42, skipping insertion in model container [2020-10-15 03:01:42,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:42" (3/3) ... [2020-10-15 03:01:42,368 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:01:42,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:01:42,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:01:42,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:01:42,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:01:42,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:01:42,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:01:42,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:01:42,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:01:42,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:01:42,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:01:42,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:01:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-10-15 03:01:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:01:42,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:42,481 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] [2020-10-15 03:01:42,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash -48220835, now seen corresponding path program 1 times [2020-10-15 03:01:42,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:42,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935176225] [2020-10-15 03:01:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:48,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:48,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:01:48,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:01:48,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-15 03:01:48,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:48,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:48,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:01:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 03:01:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:01:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 03:01:48,823 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:01:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:48,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:01:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:48,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:01:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:01:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:48,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935176225] [2020-10-15 03:01:48,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:48,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:01:48,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844890691] [2020-10-15 03:01:48,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:01:48,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:01:48,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:01:48,937 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2020-10-15 03:01:49,617 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:01:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:01:51,538 INFO L93 Difference]: Finished difference Result 586 states and 1008 transitions. [2020-10-15 03:01:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:01:51,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-15 03:01:51,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:01:51,566 INFO L225 Difference]: With dead ends: 586 [2020-10-15 03:01:51,566 INFO L226 Difference]: Without dead ends: 440 [2020-10-15 03:01:51,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:01:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-15 03:01:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2020-10-15 03:01:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-15 03:01:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 734 transitions. [2020-10-15 03:01:51,671 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 734 transitions. Word has length 102 [2020-10-15 03:01:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:01:51,672 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 734 transitions. [2020-10-15 03:01:51,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:01:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 734 transitions. [2020-10-15 03:01:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:01:51,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:51,678 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] [2020-10-15 03:01:51,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:01:51,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:51,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1079063975, now seen corresponding path program 1 times [2020-10-15 03:01:51,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:51,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517635134] [2020-10-15 03:01:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:01:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:01:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 03:01:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:56,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:01:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:01:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:01:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:01:57,254 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:01:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:01:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:57,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:01:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:01:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:01:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:01:57,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:01:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:01:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:01:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:01:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:01:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:01:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:01:57,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517635134] [2020-10-15 03:01:57,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:01:57,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:01:57,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737974490] [2020-10-15 03:01:57,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:01:57,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:01:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:01:57,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:01:57,341 INFO L87 Difference]: Start difference. First operand 437 states and 734 transitions. Second operand 5 states. [2020-10-15 03:01:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:01:59,691 INFO L93 Difference]: Finished difference Result 1205 states and 2018 transitions. [2020-10-15 03:01:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:01:59,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-15 03:01:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:01:59,701 INFO L225 Difference]: With dead ends: 1205 [2020-10-15 03:01:59,701 INFO L226 Difference]: Without dead ends: 833 [2020-10-15 03:01:59,707 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 [2020-10-15 03:01:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-15 03:01:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 831. [2020-10-15 03:01:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-15 03:01:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1391 transitions. [2020-10-15 03:01:59,810 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1391 transitions. Word has length 105 [2020-10-15 03:01:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:01:59,811 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1391 transitions. [2020-10-15 03:01:59,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:01:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1391 transitions. [2020-10-15 03:01:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:01:59,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:01:59,819 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] [2020-10-15 03:01:59,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:01:59,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:01:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:01:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1615457803, now seen corresponding path program 1 times [2020-10-15 03:01:59,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:01:59,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158687531] [2020-10-15 03:01:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:01:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:01:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:01:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:00,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:04,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:04,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:02:04,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:02:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-15 03:02:04,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:04,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:02:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:05,388 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:02:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:05,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:05,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158687531] [2020-10-15 03:02:05,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:05,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:05,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60265038] [2020-10-15 03:02:05,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:05,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:05,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:05,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:05,473 INFO L87 Difference]: Start difference. First operand 831 states and 1391 transitions. Second operand 5 states. [2020-10-15 03:02:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:08,398 INFO L93 Difference]: Finished difference Result 2347 states and 3919 transitions. [2020-10-15 03:02:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:08,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-15 03:02:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:08,414 INFO L225 Difference]: With dead ends: 2347 [2020-10-15 03:02:08,414 INFO L226 Difference]: Without dead ends: 1627 [2020-10-15 03:02:08,417 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 [2020-10-15 03:02:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-15 03:02:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1625. [2020-10-15 03:02:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-10-15 03:02:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2711 transitions. [2020-10-15 03:02:08,592 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2711 transitions. Word has length 107 [2020-10-15 03:02:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:08,593 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 2711 transitions. [2020-10-15 03:02:08,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2711 transitions. [2020-10-15 03:02:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:02:08,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:08,603 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] [2020-10-15 03:02:08,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:02:08,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash -820982441, now seen corresponding path program 1 times [2020-10-15 03:02:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:08,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398702582] [2020-10-15 03:02:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:14,179 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:14,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:14,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:02:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:14,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:14,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398702582] [2020-10-15 03:02:14,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:14,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:14,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444262959] [2020-10-15 03:02:14,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:14,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:14,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:14,253 INFO L87 Difference]: Start difference. First operand 1625 states and 2711 transitions. Second operand 5 states. [2020-10-15 03:02:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:16,636 INFO L93 Difference]: Finished difference Result 4718 states and 7866 transitions. [2020-10-15 03:02:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:16,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-15 03:02:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:16,652 INFO L225 Difference]: With dead ends: 4718 [2020-10-15 03:02:16,653 INFO L226 Difference]: Without dead ends: 3156 [2020-10-15 03:02:16,656 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 [2020-10-15 03:02:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2020-10-15 03:02:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3154. [2020-10-15 03:02:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-15 03:02:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5236 transitions. [2020-10-15 03:02:16,988 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5236 transitions. Word has length 107 [2020-10-15 03:02:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:16,989 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 5236 transitions. [2020-10-15 03:02:16,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5236 transitions. [2020-10-15 03:02:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:02:16,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:16,995 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] [2020-10-15 03:02:16,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:02:16,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1695461822, now seen corresponding path program 1 times [2020-10-15 03:02:16,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:16,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784525316] [2020-10-15 03:02:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:17,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:02:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:02:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:22,500 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:22,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:22,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:02:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:22,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:22,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784525316] [2020-10-15 03:02:22,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:22,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:22,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391910659] [2020-10-15 03:02:22,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:22,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:22,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:22,574 INFO L87 Difference]: Start difference. First operand 3154 states and 5236 transitions. Second operand 5 states. [2020-10-15 03:02:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:25,237 INFO L93 Difference]: Finished difference Result 9205 states and 15269 transitions. [2020-10-15 03:02:25,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:25,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-15 03:02:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:25,268 INFO L225 Difference]: With dead ends: 9205 [2020-10-15 03:02:25,268 INFO L226 Difference]: Without dead ends: 6117 [2020-10-15 03:02:25,280 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 [2020-10-15 03:02:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2020-10-15 03:02:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 6115. [2020-10-15 03:02:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6115 states. [2020-10-15 03:02:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6115 states to 6115 states and 10083 transitions. [2020-10-15 03:02:25,830 INFO L78 Accepts]: Start accepts. Automaton has 6115 states and 10083 transitions. Word has length 108 [2020-10-15 03:02:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:25,831 INFO L479 AbstractCegarLoop]: Abstraction has 6115 states and 10083 transitions. [2020-10-15 03:02:25,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6115 states and 10083 transitions. [2020-10-15 03:02:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:02:25,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:25,848 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] [2020-10-15 03:02:25,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:02:25,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:25,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1753932380, now seen corresponding path program 1 times [2020-10-15 03:02:25,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:25,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662642240] [2020-10-15 03:02:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:30,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:30,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:02:30,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:02:30,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:02:30,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:30,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:02:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:31,496 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:02:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:31,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:31,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662642240] [2020-10-15 03:02:31,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:31,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:31,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551826762] [2020-10-15 03:02:31,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:31,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:31,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:31,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:31,577 INFO L87 Difference]: Start difference. First operand 6115 states and 10083 transitions. Second operand 5 states. [2020-10-15 03:02:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:34,647 INFO L93 Difference]: Finished difference Result 17276 states and 28391 transitions. [2020-10-15 03:02:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:34,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 03:02:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:34,717 INFO L225 Difference]: With dead ends: 17276 [2020-10-15 03:02:34,717 INFO L226 Difference]: Without dead ends: 11930 [2020-10-15 03:02:34,730 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 [2020-10-15 03:02:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11930 states. [2020-10-15 03:02:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11930 to 11928. [2020-10-15 03:02:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11928 states. [2020-10-15 03:02:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11928 states to 11928 states and 19559 transitions. [2020-10-15 03:02:35,670 INFO L78 Accepts]: Start accepts. Automaton has 11928 states and 19559 transitions. Word has length 109 [2020-10-15 03:02:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:35,670 INFO L479 AbstractCegarLoop]: Abstraction has 11928 states and 19559 transitions. [2020-10-15 03:02:35,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11928 states and 19559 transitions. [2020-10-15 03:02:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:02:35,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:35,691 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] [2020-10-15 03:02:35,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:02:35,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash -729333094, now seen corresponding path program 1 times [2020-10-15 03:02:35,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:35,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648742791] [2020-10-15 03:02:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:35,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:40,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:40,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:02:40,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:02:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:02:40,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:40,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 03:02:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:41,261 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:41,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:02:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:41,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648742791] [2020-10-15 03:02:41,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:41,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:41,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484591984] [2020-10-15 03:02:41,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:41,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:41,319 INFO L87 Difference]: Start difference. First operand 11928 states and 19559 transitions. Second operand 5 states. [2020-10-15 03:02:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:44,876 INFO L93 Difference]: Finished difference Result 34976 states and 57364 transitions. [2020-10-15 03:02:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:44,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 03:02:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:44,947 INFO L225 Difference]: With dead ends: 34976 [2020-10-15 03:02:44,947 INFO L226 Difference]: Without dead ends: 23313 [2020-10-15 03:02:44,973 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 [2020-10-15 03:02:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23313 states. [2020-10-15 03:02:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23313 to 23311. [2020-10-15 03:02:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23311 states. [2020-10-15 03:02:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23311 states to 23311 states and 37984 transitions. [2020-10-15 03:02:46,568 INFO L78 Accepts]: Start accepts. Automaton has 23311 states and 37984 transitions. Word has length 109 [2020-10-15 03:02:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:46,569 INFO L479 AbstractCegarLoop]: Abstraction has 23311 states and 37984 transitions. [2020-10-15 03:02:46,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 23311 states and 37984 transitions. [2020-10-15 03:02:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:02:46,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:46,600 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] [2020-10-15 03:02:46,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:02:46,601 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1313610348, now seen corresponding path program 1 times [2020-10-15 03:02:46,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:46,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993679451] [2020-10-15 03:02:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:51,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:02:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:52,061 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:02:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:52,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:02:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:52,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:02:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:02:52,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993679451] [2020-10-15 03:02:52,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:52,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:02:52,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869796803] [2020-10-15 03:02:52,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:02:52,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:52,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:02:52,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:02:52,118 INFO L87 Difference]: Start difference. First operand 23311 states and 37984 transitions. Second operand 8 states. [2020-10-15 03:02:52,520 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-15 03:02:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:57,780 INFO L93 Difference]: Finished difference Result 49367 states and 80966 transitions. [2020-10-15 03:02:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:02:57,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-10-15 03:02:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:57,854 INFO L225 Difference]: With dead ends: 49367 [2020-10-15 03:02:57,854 INFO L226 Difference]: Without dead ends: 36169 [2020-10-15 03:02:57,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:02:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36169 states. [2020-10-15 03:03:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36169 to 27183. [2020-10-15 03:03:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27183 states. [2020-10-15 03:03:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27183 states to 27183 states and 44128 transitions. [2020-10-15 03:03:01,149 INFO L78 Accepts]: Start accepts. Automaton has 27183 states and 44128 transitions. Word has length 110 [2020-10-15 03:03:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:01,150 INFO L479 AbstractCegarLoop]: Abstraction has 27183 states and 44128 transitions. [2020-10-15 03:03:01,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:03:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27183 states and 44128 transitions. [2020-10-15 03:03:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:03:01,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:01,177 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] [2020-10-15 03:03:01,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:03:01,177 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:01,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2077777915, now seen corresponding path program 1 times [2020-10-15 03:03:01,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:01,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249845448] [2020-10-15 03:03:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:01,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:03:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:03:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:03:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:04,318 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:03:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:04,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:04,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249845448] [2020-10-15 03:03:04,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:04,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:04,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020131418] [2020-10-15 03:03:04,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:04,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:04,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:04,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:04,362 INFO L87 Difference]: Start difference. First operand 27183 states and 44128 transitions. Second operand 4 states. [2020-10-15 03:03:04,734 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:03:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:09,784 INFO L93 Difference]: Finished difference Result 54963 states and 89954 transitions. [2020-10-15 03:03:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:09,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-15 03:03:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:09,860 INFO L225 Difference]: With dead ends: 54963 [2020-10-15 03:03:09,861 INFO L226 Difference]: Without dead ends: 40529 [2020-10-15 03:03:09,890 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 [2020-10-15 03:03:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40529 states. [2020-10-15 03:03:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40529 to 40399. [2020-10-15 03:03:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40399 states. [2020-10-15 03:03:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40399 states to 40399 states and 65664 transitions. [2020-10-15 03:03:13,618 INFO L78 Accepts]: Start accepts. Automaton has 40399 states and 65664 transitions. Word has length 110 [2020-10-15 03:03:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:13,618 INFO L479 AbstractCegarLoop]: Abstraction has 40399 states and 65664 transitions. [2020-10-15 03:03:13,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:03:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 40399 states and 65664 transitions. [2020-10-15 03:03:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:03:13,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:13,640 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] [2020-10-15 03:03:13,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:03:13,640 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:13,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1467519254, now seen corresponding path program 1 times [2020-10-15 03:03:13,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:13,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769839898] [2020-10-15 03:03:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:03:18,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:03:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:03:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:19,067 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:03:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:19,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:19,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769839898] [2020-10-15 03:03:19,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:19,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:19,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055903798] [2020-10-15 03:03:19,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:19,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:19,119 INFO L87 Difference]: Start difference. First operand 40399 states and 65664 transitions. Second operand 5 states. [2020-10-15 03:03:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:28,402 INFO L93 Difference]: Finished difference Result 118073 states and 191719 transitions. [2020-10-15 03:03:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:28,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-15 03:03:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:28,599 INFO L225 Difference]: With dead ends: 118073 [2020-10-15 03:03:28,600 INFO L226 Difference]: Without dead ends: 78903 [2020-10-15 03:03:28,659 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 [2020-10-15 03:03:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78903 states. [2020-10-15 03:03:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78903 to 78901. [2020-10-15 03:03:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78901 states. [2020-10-15 03:03:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78901 states to 78901 states and 127301 transitions. [2020-10-15 03:03:36,941 INFO L78 Accepts]: Start accepts. Automaton has 78901 states and 127301 transitions. Word has length 114 [2020-10-15 03:03:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:36,942 INFO L479 AbstractCegarLoop]: Abstraction has 78901 states and 127301 transitions. [2020-10-15 03:03:36,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 78901 states and 127301 transitions. [2020-10-15 03:03:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 03:03:36,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:36,977 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] [2020-10-15 03:03:36,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:03:36,977 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1404163159, now seen corresponding path program 1 times [2020-10-15 03:03:36,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:36,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330518600] [2020-10-15 03:03:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:37,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 03:03:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:03:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:03:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 03:03:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 03:03:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:42,390 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:03:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:42,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:42,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:42,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:03:42,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:42,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:42,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330518600] [2020-10-15 03:03:42,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:42,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:42,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145483715] [2020-10-15 03:03:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:42,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:42,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:42,438 INFO L87 Difference]: Start difference. First operand 78901 states and 127301 transitions. Second operand 4 states. [2020-10-15 03:03:42,867 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:03:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:57,357 INFO L93 Difference]: Finished difference Result 186041 states and 301639 transitions. [2020-10-15 03:03:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:57,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-15 03:03:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:57,555 INFO L225 Difference]: With dead ends: 186041 [2020-10-15 03:03:57,555 INFO L226 Difference]: Without dead ends: 129783 [2020-10-15 03:03:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129783 states. [2020-10-15 03:04:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129783 to 129269. [2020-10-15 03:04:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129269 states. [2020-10-15 03:04:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129269 states to 129269 states and 208069 transitions. [2020-10-15 03:04:12,141 INFO L78 Accepts]: Start accepts. Automaton has 129269 states and 208069 transitions. Word has length 116 [2020-10-15 03:04:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:12,142 INFO L479 AbstractCegarLoop]: Abstraction has 129269 states and 208069 transitions. [2020-10-15 03:04:12,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:04:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 129269 states and 208069 transitions. [2020-10-15 03:04:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:04:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:12,189 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] [2020-10-15 03:04:12,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:04:12,190 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1154930846, now seen corresponding path program 1 times [2020-10-15 03:04:12,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:12,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493062101] [2020-10-15 03:04:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:17,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:17,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:04:17,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:04:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:04:17,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:17,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 03:04:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:17,729 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:04:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:17,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:17,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:17,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:04:17,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:17,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:17,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:17,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493062101] [2020-10-15 03:04:17,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:17,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:17,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162915554] [2020-10-15 03:04:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:17,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:17,786 INFO L87 Difference]: Start difference. First operand 129269 states and 208069 transitions. Second operand 5 states. [2020-10-15 03:04:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:50,709 INFO L93 Difference]: Finished difference Result 380747 states and 612807 transitions. [2020-10-15 03:04:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:50,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:04:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:51,257 INFO L225 Difference]: With dead ends: 380747 [2020-10-15 03:04:51,257 INFO L226 Difference]: Without dead ends: 252145 [2020-10-15 03:04:51,398 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 [2020-10-15 03:04:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252145 states. [2020-10-15 03:05:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252145 to 252143. [2020-10-15 03:05:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252143 states. [2020-10-15 03:05:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252143 states to 252143 states and 403131 transitions. [2020-10-15 03:05:24,398 INFO L78 Accepts]: Start accepts. Automaton has 252143 states and 403131 transitions. Word has length 120 [2020-10-15 03:05:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:24,398 INFO L479 AbstractCegarLoop]: Abstraction has 252143 states and 403131 transitions. [2020-10-15 03:05:24,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 252143 states and 403131 transitions. [2020-10-15 03:05:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:05:24,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:24,500 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] [2020-10-15 03:05:24,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:05:24,500 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash -652082453, now seen corresponding path program 1 times [2020-10-15 03:05:24,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:24,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566171982] [2020-10-15 03:05:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking...