/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:29:04,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:29:04,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:29:04,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:29:04,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:29:04,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:29:04,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:29:04,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:29:04,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:29:04,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:29:04,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:29:04,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:29:04,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:29:04,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:29:04,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:29:04,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:29:04,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:29:04,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:29:04,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:29:04,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:29:04,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:29:04,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:29:04,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:29:04,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:29:04,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:29:04,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:29:04,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:29:04,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:29:04,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:29:04,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:29:04,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:29:04,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:29:04,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:29:04,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:29:04,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:29:04,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:29:04,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:29:04,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:29:04,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:29:04,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:29:04,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:29:04,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:29:04,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:29:04,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:29:04,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:29:04,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:29:04,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:29:04,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:29:04,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:29:04,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:29:04,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:29:04,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:29:04,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:29:04,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:29:04,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:29:04,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:29:04,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:29:04,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:29:04,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:29:04,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:29:04,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:29:04,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:29:04,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:29:04,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:29:04,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:29:04,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:29:04,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:29:04,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:29:04,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:29:04,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:29:04,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:29:04,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:29:05,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:29:05,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:29:05,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:29:05,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:29:05,157 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:29:05,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:29:05,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bad958c8/9672fc84569642908a799e6925252493/FLAG7a8ff59d0 [2020-10-14 08:29:05,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:29:05,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:29:05,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bad958c8/9672fc84569642908a799e6925252493/FLAG7a8ff59d0 [2020-10-14 08:29:06,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bad958c8/9672fc84569642908a799e6925252493 [2020-10-14 08:29:06,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:29:06,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:29:06,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:29:06,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:29:06,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:29:06,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ec1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06, skipping insertion in model container [2020-10-14 08:29:06,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:29:06,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:29:06,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:29:06,671 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:29:06,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:29:06,894 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:29:06,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06 WrapperNode [2020-10-14 08:29:06,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:29:06,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:29:06,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:29:06,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:29:06,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:06,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:07,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:07,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... [2020-10-14 08:29:07,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:29:07,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:29:07,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:29:07,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:29:07,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:29:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:29:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:29:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:29:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:29:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:29:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:29:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:29:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:29:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:29:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:29:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:29:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:29:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:29:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:29:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:29:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:29:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:29:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:29:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:29:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:29:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:29:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:29:08,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:29:08,576 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:29:08,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:29:08 BoogieIcfgContainer [2020-10-14 08:29:08,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:29:08,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:29:08,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:29:08,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:29:08,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:29:06" (1/3) ... [2020-10-14 08:29:08,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c567068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:29:08, skipping insertion in model container [2020-10-14 08:29:08,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:29:06" (2/3) ... [2020-10-14 08:29:08,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c567068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:29:08, skipping insertion in model container [2020-10-14 08:29:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:29:08" (3/3) ... [2020-10-14 08:29:08,593 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 08:29:08,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:29:08,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:29:08,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:29:08,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:29:08,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:29:08,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:29:08,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:29:08,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:29:08,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:29:08,658 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:29:08,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:29:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-14 08:29:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 08:29:08,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:08,701 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] [2020-10-14 08:29:08,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:08,708 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-14 08:29:08,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:08,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142284435] [2020-10-14 08:29:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 08:29:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:29:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 08:29:14,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:14,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 08:29:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:29:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 08:29:14,958 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:29:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:14,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:14,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:15,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142284435] [2020-10-14 08:29:15,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:15,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:15,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912159520] [2020-10-14 08:29:15,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:15,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:15,084 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-14 08:29:15,587 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:29:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:17,824 INFO L93 Difference]: Finished difference Result 598 states and 1032 transitions. [2020-10-14 08:29:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:17,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-14 08:29:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:17,852 INFO L225 Difference]: With dead ends: 598 [2020-10-14 08:29:17,852 INFO L226 Difference]: Without dead ends: 452 [2020-10-14 08:29:17,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-14 08:29:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 449. [2020-10-14 08:29:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-14 08:29:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 746 transitions. [2020-10-14 08:29:17,972 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 746 transitions. Word has length 114 [2020-10-14 08:29:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:17,973 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 746 transitions. [2020-10-14 08:29:17,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 746 transitions. [2020-10-14 08:29:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 08:29:17,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:17,979 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] [2020-10-14 08:29:17,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:29:17,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:17,981 INFO L82 PathProgramCache]: Analyzing trace with hash -182953907, now seen corresponding path program 1 times [2020-10-14 08:29:17,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:17,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300893090] [2020-10-14 08:29:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:23,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:23,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 08:29:23,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:29:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:29:23,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:23,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:29:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:29:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:23,543 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:23,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:23,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 08:29:23,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:23,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:23,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300893090] [2020-10-14 08:29:23,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:23,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:23,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819836004] [2020-10-14 08:29:23,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:23,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:23,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:23,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:23,633 INFO L87 Difference]: Start difference. First operand 449 states and 746 transitions. Second operand 4 states. [2020-10-14 08:29:24,127 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:29:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:25,982 INFO L93 Difference]: Finished difference Result 943 states and 1578 transitions. [2020-10-14 08:29:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:25,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-14 08:29:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:25,990 INFO L225 Difference]: With dead ends: 943 [2020-10-14 08:29:25,991 INFO L226 Difference]: Without dead ends: 687 [2020-10-14 08:29:25,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-10-14 08:29:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 683. [2020-10-14 08:29:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-14 08:29:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1138 transitions. [2020-10-14 08:29:26,041 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1138 transitions. Word has length 117 [2020-10-14 08:29:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:26,042 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 1138 transitions. [2020-10-14 08:29:26,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1138 transitions. [2020-10-14 08:29:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 08:29:26,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:26,047 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] [2020-10-14 08:29:26,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:29:26,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash -423053149, now seen corresponding path program 1 times [2020-10-14 08:29:26,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:26,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257592864] [2020-10-14 08:29:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:26,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:31,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 08:29:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:29:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:29:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:31,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 08:29:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 08:29:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:31,566 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:31,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:31,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:29:31,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:31,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:31,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257592864] [2020-10-14 08:29:31,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:31,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:31,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348987541] [2020-10-14 08:29:31,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:31,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:31,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:31,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:31,648 INFO L87 Difference]: Start difference. First operand 683 states and 1138 transitions. Second operand 4 states. [2020-10-14 08:29:32,054 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:29:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:33,817 INFO L93 Difference]: Finished difference Result 1627 states and 2720 transitions. [2020-10-14 08:29:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:33,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-14 08:29:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:33,828 INFO L225 Difference]: With dead ends: 1627 [2020-10-14 08:29:33,828 INFO L226 Difference]: Without dead ends: 1137 [2020-10-14 08:29:33,833 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 [2020-10-14 08:29:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-10-14 08:29:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1131. [2020-10-14 08:29:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-10-14 08:29:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1882 transitions. [2020-10-14 08:29:33,904 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1882 transitions. Word has length 120 [2020-10-14 08:29:33,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:33,906 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1882 transitions. [2020-10-14 08:29:33,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1882 transitions. [2020-10-14 08:29:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 08:29:33,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:33,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:33,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:29:33,915 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash 582238961, now seen corresponding path program 1 times [2020-10-14 08:29:33,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:33,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795209663] [2020-10-14 08:29:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 08:29:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:29:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 08:29:38,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:38,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 08:29:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:29:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:39,600 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:39,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:39,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:29:39,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:39,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:39,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:39,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795209663] [2020-10-14 08:29:39,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:39,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:39,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792393715] [2020-10-14 08:29:39,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:39,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:39,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:39,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:39,700 INFO L87 Difference]: Start difference. First operand 1131 states and 1882 transitions. Second operand 4 states. [2020-10-14 08:29:40,278 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:29:42,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:42,703 INFO L93 Difference]: Finished difference Result 2919 states and 4852 transitions. [2020-10-14 08:29:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:42,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 08:29:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:42,715 INFO L225 Difference]: With dead ends: 2919 [2020-10-14 08:29:42,716 INFO L226 Difference]: Without dead ends: 1981 [2020-10-14 08:29:42,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-14 08:29:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1971. [2020-10-14 08:29:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-10-14 08:29:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 3226 transitions. [2020-10-14 08:29:42,832 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 3226 transitions. Word has length 123 [2020-10-14 08:29:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:42,833 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 3226 transitions. [2020-10-14 08:29:42,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 3226 transitions. [2020-10-14 08:29:42,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 08:29:42,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:42,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:42,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:29:42,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 606233927, now seen corresponding path program 1 times [2020-10-14 08:29:42,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:42,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348170512] [2020-10-14 08:29:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:47,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:47,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 08:29:47,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:29:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 08:29:47,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:48,579 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:48,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:29:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:48,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:48,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348170512] [2020-10-14 08:29:48,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:48,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:29:48,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120621819] [2020-10-14 08:29:48,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:29:48,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:48,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:29:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:48,669 INFO L87 Difference]: Start difference. First operand 1971 states and 3226 transitions. Second operand 5 states. [2020-10-14 08:29:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:52,261 INFO L93 Difference]: Finished difference Result 5745 states and 9398 transitions. [2020-10-14 08:29:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:52,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-14 08:29:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:52,295 INFO L225 Difference]: With dead ends: 5745 [2020-10-14 08:29:52,296 INFO L226 Difference]: Without dead ends: 3839 [2020-10-14 08:29:52,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:29:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2020-10-14 08:29:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3837. [2020-10-14 08:29:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3837 states. [2020-10-14 08:29:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 6259 transitions. [2020-10-14 08:29:52,819 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 6259 transitions. Word has length 126 [2020-10-14 08:29:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:52,820 INFO L479 AbstractCegarLoop]: Abstraction has 3837 states and 6259 transitions. [2020-10-14 08:29:52,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:29:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 6259 transitions. [2020-10-14 08:29:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 08:29:52,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:52,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:29:52,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:29:52,829 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 692648329, now seen corresponding path program 1 times [2020-10-14 08:29:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:52,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220084321] [2020-10-14 08:29:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:57,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 08:29:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:29:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:29:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:57,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:29:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:29:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:58,304 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:29:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:58,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:58,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:29:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:58,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:29:58,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220084321] [2020-10-14 08:29:58,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:58,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:58,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557891002] [2020-10-14 08:29:58,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:58,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:58,385 INFO L87 Difference]: Start difference. First operand 3837 states and 6259 transitions. Second operand 4 states. [2020-10-14 08:30:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:01,801 INFO L93 Difference]: Finished difference Result 11207 states and 18269 transitions. [2020-10-14 08:30:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:01,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 08:30:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:01,840 INFO L225 Difference]: With dead ends: 11207 [2020-10-14 08:30:01,840 INFO L226 Difference]: Without dead ends: 7465 [2020-10-14 08:30:01,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7465 states. [2020-10-14 08:30:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7465 to 7463. [2020-10-14 08:30:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7463 states. [2020-10-14 08:30:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 12124 transitions. [2020-10-14 08:30:02,326 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 12124 transitions. Word has length 128 [2020-10-14 08:30:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:02,326 INFO L479 AbstractCegarLoop]: Abstraction has 7463 states and 12124 transitions. [2020-10-14 08:30:02,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 12124 transitions. [2020-10-14 08:30:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 08:30:02,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:02,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:02,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:30:02,334 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1511226290, now seen corresponding path program 1 times [2020-10-14 08:30:02,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:02,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313426887] [2020-10-14 08:30:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:07,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:30:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:07,806 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:07,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:07,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:07,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:30:07,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:07,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:07,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313426887] [2020-10-14 08:30:07,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:07,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:07,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244488659] [2020-10-14 08:30:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:07,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:07,862 INFO L87 Difference]: Start difference. First operand 7463 states and 12124 transitions. Second operand 4 states. [2020-10-14 08:30:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:11,414 INFO L93 Difference]: Finished difference Result 22201 states and 36034 transitions. [2020-10-14 08:30:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:11,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 08:30:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:11,474 INFO L225 Difference]: With dead ends: 22201 [2020-10-14 08:30:11,474 INFO L226 Difference]: Without dead ends: 14834 [2020-10-14 08:30:11,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14834 states. [2020-10-14 08:30:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14834 to 7480. [2020-10-14 08:30:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7480 states. [2020-10-14 08:30:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 12146 transitions. [2020-10-14 08:30:12,038 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 12146 transitions. Word has length 128 [2020-10-14 08:30:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:12,038 INFO L479 AbstractCegarLoop]: Abstraction has 7480 states and 12146 transitions. [2020-10-14 08:30:12,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 12146 transitions. [2020-10-14 08:30:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 08:30:12,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:12,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:12,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:30:12,047 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1574028649, now seen corresponding path program 1 times [2020-10-14 08:30:12,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:12,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987087109] [2020-10-14 08:30:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:17,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 08:30:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:30:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 08:30:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:17,490 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:17,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:17,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:17,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:17,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:30:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:17,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:17,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987087109] [2020-10-14 08:30:17,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:17,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:17,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84252041] [2020-10-14 08:30:17,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:17,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:17,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:17,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:17,533 INFO L87 Difference]: Start difference. First operand 7480 states and 12146 transitions. Second operand 4 states. [2020-10-14 08:30:17,962 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:30:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:20,310 INFO L93 Difference]: Finished difference Result 14148 states and 23072 transitions. [2020-10-14 08:30:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:20,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 08:30:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:20,338 INFO L225 Difference]: With dead ends: 14148 [2020-10-14 08:30:20,338 INFO L226 Difference]: Without dead ends: 10562 [2020-10-14 08:30:20,350 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 [2020-10-14 08:30:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10562 states. [2020-10-14 08:30:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10562 to 10560. [2020-10-14 08:30:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10560 states. [2020-10-14 08:30:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10560 states to 10560 states and 17134 transitions. [2020-10-14 08:30:20,989 INFO L78 Accepts]: Start accepts. Automaton has 10560 states and 17134 transitions. Word has length 128 [2020-10-14 08:30:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:20,989 INFO L479 AbstractCegarLoop]: Abstraction has 10560 states and 17134 transitions. [2020-10-14 08:30:20,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 10560 states and 17134 transitions. [2020-10-14 08:30:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:30:20,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:20,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:20,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:30:20,996 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:20,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1183914421, now seen corresponding path program 1 times [2020-10-14 08:30:20,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:20,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149589880] [2020-10-14 08:30:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:26,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:26,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:30:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:30:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:30:26,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:26,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 08:30:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 08:30:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:26,415 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:26,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:30:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:26,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149589880] [2020-10-14 08:30:26,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:26,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:26,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851357667] [2020-10-14 08:30:26,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:26,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:26,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:26,461 INFO L87 Difference]: Start difference. First operand 10560 states and 17134 transitions. Second operand 4 states. [2020-10-14 08:30:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:30,324 INFO L93 Difference]: Finished difference Result 31479 states and 51052 transitions. [2020-10-14 08:30:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:30,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 08:30:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:30,375 INFO L225 Difference]: With dead ends: 31479 [2020-10-14 08:30:30,375 INFO L226 Difference]: Without dead ends: 21028 [2020-10-14 08:30:30,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21028 states. [2020-10-14 08:30:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21028 to 10594. [2020-10-14 08:30:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10594 states. [2020-10-14 08:30:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10594 states to 10594 states and 17182 transitions. [2020-10-14 08:30:30,991 INFO L78 Accepts]: Start accepts. Automaton has 10594 states and 17182 transitions. Word has length 129 [2020-10-14 08:30:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:30,991 INFO L479 AbstractCegarLoop]: Abstraction has 10594 states and 17182 transitions. [2020-10-14 08:30:30,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10594 states and 17182 transitions. [2020-10-14 08:30:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:30:30,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:30,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:30,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:30:30,996 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:30,997 INFO L82 PathProgramCache]: Analyzing trace with hash -827360761, now seen corresponding path program 1 times [2020-10-14 08:30:30,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:30,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589712679] [2020-10-14 08:30:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 08:30:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:30:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:30:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:36,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:30:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:30:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 08:30:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:36,534 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:36,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:36,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589712679] [2020-10-14 08:30:36,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:36,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:30:36,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933289330] [2020-10-14 08:30:36,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:30:36,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:36,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:30:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:36,595 INFO L87 Difference]: Start difference. First operand 10594 states and 17182 transitions. Second operand 5 states. [2020-10-14 08:30:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:40,041 INFO L93 Difference]: Finished difference Result 31132 states and 50517 transitions. [2020-10-14 08:30:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:40,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-14 08:30:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:40,092 INFO L225 Difference]: With dead ends: 31132 [2020-10-14 08:30:40,093 INFO L226 Difference]: Without dead ends: 20698 [2020-10-14 08:30:40,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:30:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20698 states. [2020-10-14 08:30:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20698 to 20696. [2020-10-14 08:30:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20696 states. [2020-10-14 08:30:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20696 states to 20696 states and 33435 transitions. [2020-10-14 08:30:41,344 INFO L78 Accepts]: Start accepts. Automaton has 20696 states and 33435 transitions. Word has length 129 [2020-10-14 08:30:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:41,345 INFO L479 AbstractCegarLoop]: Abstraction has 20696 states and 33435 transitions. [2020-10-14 08:30:41,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:30:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20696 states and 33435 transitions. [2020-10-14 08:30:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 08:30:41,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:41,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:41,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:30:41,353 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash 372803549, now seen corresponding path program 1 times [2020-10-14 08:30:41,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:41,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320097058] [2020-10-14 08:30:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:46,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 08:30:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:46,815 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:46,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:46,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:30:46,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:46,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:46,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:46,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320097058] [2020-10-14 08:30:46,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:46,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:46,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566604088] [2020-10-14 08:30:46,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:46,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:46,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:46,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:46,877 INFO L87 Difference]: Start difference. First operand 20696 states and 33435 transitions. Second operand 4 states. [2020-10-14 08:30:47,325 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-14 08:30:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:51,075 INFO L93 Difference]: Finished difference Result 38028 states and 61805 transitions. [2020-10-14 08:30:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:51,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-14 08:30:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:51,141 INFO L225 Difference]: With dead ends: 38028 [2020-10-14 08:30:51,141 INFO L226 Difference]: Without dead ends: 28018 [2020-10-14 08:30:51,166 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 [2020-10-14 08:30:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28018 states. [2020-10-14 08:30:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28018 to 28016. [2020-10-14 08:30:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28016 states. [2020-10-14 08:30:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28016 states to 28016 states and 45267 transitions. [2020-10-14 08:30:53,068 INFO L78 Accepts]: Start accepts. Automaton has 28016 states and 45267 transitions. Word has length 130 [2020-10-14 08:30:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:53,069 INFO L479 AbstractCegarLoop]: Abstraction has 28016 states and 45267 transitions. [2020-10-14 08:30:53,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 28016 states and 45267 transitions. [2020-10-14 08:30:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 08:30:53,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:53,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:30:53,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:30:53,074 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash -948505091, now seen corresponding path program 1 times [2020-10-14 08:30:53,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:53,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956408334] [2020-10-14 08:30:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:55,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:58,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 08:30:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:30:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:30:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:58,491 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:30:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:58,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:30:58,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:58,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:58,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956408334] [2020-10-14 08:30:58,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:58,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:58,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371137357] [2020-10-14 08:30:58,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:58,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:58,532 INFO L87 Difference]: Start difference. First operand 28016 states and 45267 transitions. Second operand 4 states. [2020-10-14 08:31:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:03,456 INFO L93 Difference]: Finished difference Result 83939 states and 135611 transitions. [2020-10-14 08:31:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:03,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 08:31:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:03,536 INFO L225 Difference]: With dead ends: 83939 [2020-10-14 08:31:03,536 INFO L226 Difference]: Without dead ends: 55984 [2020-10-14 08:31:03,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55984 states. [2020-10-14 08:31:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55984 to 28040. [2020-10-14 08:31:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28040 states. [2020-10-14 08:31:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28040 states to 28040 states and 45303 transitions. [2020-10-14 08:31:05,707 INFO L78 Accepts]: Start accepts. Automaton has 28040 states and 45303 transitions. Word has length 131 [2020-10-14 08:31:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:05,707 INFO L479 AbstractCegarLoop]: Abstraction has 28040 states and 45303 transitions. [2020-10-14 08:31:05,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 28040 states and 45303 transitions. [2020-10-14 08:31:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 08:31:05,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:05,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:05,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:31:05,711 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:05,711 INFO L82 PathProgramCache]: Analyzing trace with hash 155815330, now seen corresponding path program 1 times [2020-10-14 08:31:05,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:05,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393194056] [2020-10-14 08:31:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:10,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:31:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:11,151 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:31:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:11,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:11,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:11,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:31:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:11,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:31:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:31:11,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393194056] [2020-10-14 08:31:11,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:11,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:11,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203755150] [2020-10-14 08:31:11,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:11,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:11,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:11,229 INFO L87 Difference]: Start difference. First operand 28040 states and 45303 transitions. Second operand 4 states. [2020-10-14 08:31:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:17,776 INFO L93 Difference]: Finished difference Result 82174 states and 132791 transitions. [2020-10-14 08:31:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:17,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 08:31:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:17,858 INFO L225 Difference]: With dead ends: 82174 [2020-10-14 08:31:17,858 INFO L226 Difference]: Without dead ends: 54648 [2020-10-14 08:31:17,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54648 states. [2020-10-14 08:31:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54648 to 54642. [2020-10-14 08:31:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54642 states. [2020-10-14 08:31:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54642 states to 54642 states and 87895 transitions. [2020-10-14 08:31:21,703 INFO L78 Accepts]: Start accepts. Automaton has 54642 states and 87895 transitions. Word has length 131 [2020-10-14 08:31:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:21,704 INFO L479 AbstractCegarLoop]: Abstraction has 54642 states and 87895 transitions. [2020-10-14 08:31:21,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 54642 states and 87895 transitions. [2020-10-14 08:31:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 08:31:21,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:21,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:21,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:31:21,712 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash -771921410, now seen corresponding path program 1 times [2020-10-14 08:31:21,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:21,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713138698] [2020-10-14 08:31:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:26,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:26,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 08:31:26,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:31:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:31:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:26,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:31:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:31:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 08:31:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:27,235 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:31:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:31:27,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713138698] [2020-10-14 08:31:27,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:27,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:31:27,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084563991] [2020-10-14 08:31:27,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:31:27,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:31:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:31:27,301 INFO L87 Difference]: Start difference. First operand 54642 states and 87895 transitions. Second operand 5 states. [2020-10-14 08:31:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:38,005 INFO L93 Difference]: Finished difference Result 161175 states and 259329 transitions. [2020-10-14 08:31:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:38,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 08:31:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:38,153 INFO L225 Difference]: With dead ends: 161175 [2020-10-14 08:31:38,153 INFO L226 Difference]: Without dead ends: 107253 [2020-10-14 08:31:38,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:31:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107253 states. [2020-10-14 08:31:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107253 to 107251. [2020-10-14 08:31:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107251 states. [2020-10-14 08:31:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107251 states to 107251 states and 171991 transitions. [2020-10-14 08:31:48,693 INFO L78 Accepts]: Start accepts. Automaton has 107251 states and 171991 transitions. Word has length 132 [2020-10-14 08:31:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:48,694 INFO L479 AbstractCegarLoop]: Abstraction has 107251 states and 171991 transitions. [2020-10-14 08:31:48,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:31:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 107251 states and 171991 transitions. [2020-10-14 08:31:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 08:31:48,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:48,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:31:48,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:31:48,706 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash 712874877, now seen corresponding path program 1 times [2020-10-14 08:31:48,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:48,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006839011] [2020-10-14 08:31:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:53,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:53,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 08:31:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:31:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 08:31:53,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:54,170 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:31:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:54,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:54,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:54,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:54,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:31:54,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:54,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:31:54,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006839011] [2020-10-14 08:31:54,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:54,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:54,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631485854] [2020-10-14 08:31:54,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:54,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:54,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:54,236 INFO L87 Difference]: Start difference. First operand 107251 states and 171991 transitions. Second operand 4 states. [2020-10-14 08:32:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:13,781 INFO L93 Difference]: Finished difference Result 313803 states and 503335 transitions. [2020-10-14 08:32:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:32:13,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-14 08:32:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:14,169 INFO L225 Difference]: With dead ends: 313803 [2020-10-14 08:32:14,169 INFO L226 Difference]: Without dead ends: 208489 [2020-10-14 08:32:14,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:32:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208489 states. [2020-10-14 08:32:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208489 to 208487. [2020-10-14 08:32:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208487 states. [2020-10-14 08:32:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208487 states to 208487 states and 332989 transitions. [2020-10-14 08:32:35,828 INFO L78 Accepts]: Start accepts. Automaton has 208487 states and 332989 transitions. Word has length 134 [2020-10-14 08:32:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:35,828 INFO L479 AbstractCegarLoop]: Abstraction has 208487 states and 332989 transitions. [2020-10-14 08:32:35,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:32:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 208487 states and 332989 transitions. [2020-10-14 08:32:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 08:32:35,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:35,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:32:35,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:32:35,852 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1412053009, now seen corresponding path program 1 times [2020-10-14 08:32:35,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:35,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399864679] [2020-10-14 08:32:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:40,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:32:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:32:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 08:32:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:41,350 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-14 08:32:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:41,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:32:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:32:41,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399864679] [2020-10-14 08:32:41,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:41,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:32:41,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934323595] [2020-10-14 08:32:41,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:32:41,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:41,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:32:41,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:32:41,424 INFO L87 Difference]: Start difference. First operand 208487 states and 332989 transitions. Second operand 6 states.