/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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:33:05,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:33:05,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:33:05,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:33:05,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:33:05,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:33:05,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:33:05,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:33:05,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:33:05,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:33:05,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:33:05,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:33:05,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:33:05,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:33:05,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:33:05,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:33:05,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:33:05,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:33:05,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:33:05,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:33:05,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:33:05,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:33:05,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:33:05,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:33:05,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:33:05,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:33:05,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:33:05,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:33:05,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:33:05,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:33:05,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:33:05,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:33:05,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:33:05,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:33:05,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:33:05,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:33:05,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:33:05,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:33:05,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:33:05,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:33:05,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:33:05,751 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 09:33:05,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:33:05,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:33:05,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:33:05,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:33:05,803 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:33:05,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:33:05,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:33:05,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:33:05,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:33:05,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:33:05,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:33:05,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:33:05,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:33:05,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:33:05,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:33:05,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:33:05,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:33:05,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:33:05,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:33:05,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:33:05,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:33:05,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:33:05,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:33:05,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:33:05,809 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 09:33:06,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:33:06,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:33:06,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:33:06,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:33:06,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:33:06,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:33:06,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be97d019c/a9f23c7fd0434c15a625830f3607d935/FLAG90b8f4094 [2020-10-14 09:33:06,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:33:06,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:33:06,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be97d019c/a9f23c7fd0434c15a625830f3607d935/FLAG90b8f4094 [2020-10-14 09:33:06,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be97d019c/a9f23c7fd0434c15a625830f3607d935 [2020-10-14 09:33:06,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:33:06,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:33:06,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:33:06,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:33:06,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:33:06,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:33:06" (1/1) ... [2020-10-14 09:33:06,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7225e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:06, skipping insertion in model container [2020-10-14 09:33:06,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:33:06" (1/1) ... [2020-10-14 09:33:06,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:33:07,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:33:07,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:33:07,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:33:07,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:33:07,754 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:33:07,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07 WrapperNode [2020-10-14 09:33:07,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:33:07,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:33:07,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:33:07,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:33:07,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (1/1) ... [2020-10-14 09:33:07,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:33:07,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:33:07,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:33:07,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:33:07,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (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 09:33:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:33:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:33:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:33:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:33:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:33:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:33:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:33:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:33:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:33:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:33:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:33:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:33:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:33:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:33:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:33:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:33:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:33:09,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:33:09,195 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:33:09,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:33:09 BoogieIcfgContainer [2020-10-14 09:33:09,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:33:09,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:33:09,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:33:09,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:33:09,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:33:06" (1/3) ... [2020-10-14 09:33:09,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f243098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:33:09, skipping insertion in model container [2020-10-14 09:33:09,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:33:07" (2/3) ... [2020-10-14 09:33:09,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f243098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:33:09, skipping insertion in model container [2020-10-14 09:33:09,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:33:09" (3/3) ... [2020-10-14 09:33:09,210 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:33:09,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:33:09,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:33:09,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:33:09,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:33:09,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:33:09,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:33:09,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:33:09,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:33:09,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:33:09,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:33:09,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:33:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-14 09:33:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:33:09,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:09,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:33:09,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-14 09:33:09,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:09,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955075898] [2020-10-14 09:33:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:14,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:14,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:33:14,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:33:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:33:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:14,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:33:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:33:14,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:33:15,414 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:15,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:15,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:15,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:33:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:15,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:15,569 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 09:33:15,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955075898] [2020-10-14 09:33:15,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:15,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:15,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167067033] [2020-10-14 09:33:15,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:15,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:15,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:15,610 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 4 states. [2020-10-14 09:33:16,272 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:18,547 INFO L93 Difference]: Finished difference Result 661 states and 1135 transitions. [2020-10-14 09:33:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:18,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-14 09:33:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:18,568 INFO L225 Difference]: With dead ends: 661 [2020-10-14 09:33:18,568 INFO L226 Difference]: Without dead ends: 495 [2020-10-14 09:33:18,573 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 09:33:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-14 09:33:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-14 09:33:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-14 09:33:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 813 transitions. [2020-10-14 09:33:18,674 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 813 transitions. Word has length 122 [2020-10-14 09:33:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:18,675 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 813 transitions. [2020-10-14 09:33:18,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 813 transitions. [2020-10-14 09:33:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:33:18,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:18,679 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] [2020-10-14 09:33:18,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:33:18,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:18,680 INFO L82 PathProgramCache]: Analyzing trace with hash -407523285, now seen corresponding path program 1 times [2020-10-14 09:33:18,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:18,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90722874] [2020-10-14 09:33:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:23,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:33:23,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:33:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 09:33:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:23,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:33:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:33:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:24,197 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:24,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:33:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:24,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:24,264 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 09:33:24,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90722874] [2020-10-14 09:33:24,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:24,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:24,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357699018] [2020-10-14 09:33:24,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:24,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:24,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:24,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:24,268 INFO L87 Difference]: Start difference. First operand 492 states and 813 transitions. Second operand 4 states. [2020-10-14 09:33:24,671 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:26,493 INFO L93 Difference]: Finished difference Result 1062 states and 1769 transitions. [2020-10-14 09:33:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:26,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:33:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:26,503 INFO L225 Difference]: With dead ends: 1062 [2020-10-14 09:33:26,503 INFO L226 Difference]: Without dead ends: 767 [2020-10-14 09:33:26,506 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 09:33:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-14 09:33:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 763. [2020-10-14 09:33:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-14 09:33:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1266 transitions. [2020-10-14 09:33:26,558 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1266 transitions. Word has length 125 [2020-10-14 09:33:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:26,559 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1266 transitions. [2020-10-14 09:33:26,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1266 transitions. [2020-10-14 09:33:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:33:26,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:26,561 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 09:33:26,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:33:26,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:26,562 INFO L82 PathProgramCache]: Analyzing trace with hash 302119668, now seen corresponding path program 1 times [2020-10-14 09:33:26,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:26,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552390184] [2020-10-14 09:33:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:31,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:31,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:33:31,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:33:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 09:33:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:31,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:33:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:33:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:32,200 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:32,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:32,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:33:32,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:32,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:32,302 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 09:33:32,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552390184] [2020-10-14 09:33:32,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:32,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:32,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65155771] [2020-10-14 09:33:32,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:32,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:32,310 INFO L87 Difference]: Start difference. First operand 763 states and 1266 transitions. Second operand 4 states. [2020-10-14 09:33:32,878 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:35,020 INFO L93 Difference]: Finished difference Result 1855 states and 3092 transitions. [2020-10-14 09:33:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:35,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 09:33:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:35,029 INFO L225 Difference]: With dead ends: 1855 [2020-10-14 09:33:35,029 INFO L226 Difference]: Without dead ends: 1289 [2020-10-14 09:33:35,031 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 09:33:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-10-14 09:33:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1283. [2020-10-14 09:33:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-10-14 09:33:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2130 transitions. [2020-10-14 09:33:35,092 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2130 transitions. Word has length 128 [2020-10-14 09:33:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:35,093 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 2130 transitions. [2020-10-14 09:33:35,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2130 transitions. [2020-10-14 09:33:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:33:35,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:35,095 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 09:33:35,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:33:35,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash -152382628, now seen corresponding path program 1 times [2020-10-14 09:33:35,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:35,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311349486] [2020-10-14 09:33:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:40,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:33:40,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:33:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:33:40,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:40,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 09:33:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:33:40,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:40,566 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:33:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:40,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:40,627 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 09:33:40,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311349486] [2020-10-14 09:33:40,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:40,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:40,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348225279] [2020-10-14 09:33:40,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:40,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:40,629 INFO L87 Difference]: Start difference. First operand 1283 states and 2130 transitions. Second operand 4 states. [2020-10-14 09:33:41,011 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:42,888 INFO L93 Difference]: Finished difference Result 3359 states and 5580 transitions. [2020-10-14 09:33:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:42,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:33:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:42,906 INFO L225 Difference]: With dead ends: 3359 [2020-10-14 09:33:42,906 INFO L226 Difference]: Without dead ends: 2273 [2020-10-14 09:33:42,910 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 09:33:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-10-14 09:33:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2263. [2020-10-14 09:33:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-10-14 09:33:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3710 transitions. [2020-10-14 09:33:43,050 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3710 transitions. Word has length 131 [2020-10-14 09:33:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:43,051 INFO L479 AbstractCegarLoop]: Abstraction has 2263 states and 3710 transitions. [2020-10-14 09:33:43,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3710 transitions. [2020-10-14 09:33:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 09:33:43,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:43,060 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 09:33:43,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:33:43,061 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash -527002627, now seen corresponding path program 1 times [2020-10-14 09:33:43,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:43,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676145766] [2020-10-14 09:33:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:48,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:48,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 09:33:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:33:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 09:33:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:48,629 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:48,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:48,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:48,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:33:48,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:48,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:48,727 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 09:33:48,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676145766] [2020-10-14 09:33:48,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:48,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:33:48,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529881366] [2020-10-14 09:33:48,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:33:48,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:48,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:33:48,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:33:48,730 INFO L87 Difference]: Start difference. First operand 2263 states and 3710 transitions. Second operand 5 states. [2020-10-14 09:33:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:51,291 INFO L93 Difference]: Finished difference Result 6605 states and 10818 transitions. [2020-10-14 09:33:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:51,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 09:33:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:51,314 INFO L225 Difference]: With dead ends: 6605 [2020-10-14 09:33:51,315 INFO L226 Difference]: Without dead ends: 4407 [2020-10-14 09:33:51,320 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 09:33:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-10-14 09:33:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4405. [2020-10-14 09:33:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2020-10-14 09:33:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 7195 transitions. [2020-10-14 09:33:51,556 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 7195 transitions. Word has length 134 [2020-10-14 09:33:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:51,556 INFO L479 AbstractCegarLoop]: Abstraction has 4405 states and 7195 transitions. [2020-10-14 09:33:51,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:33:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 7195 transitions. [2020-10-14 09:33:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:33:51,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:51,561 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 09:33:51,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:33:51,563 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:51,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1931057901, now seen corresponding path program 1 times [2020-10-14 09:33:51,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:51,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849561776] [2020-10-14 09:33:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:56,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:56,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:33:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:33:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:33:56,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:56,999 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:57,053 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 09:33:57,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849561776] [2020-10-14 09:33:57,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:57,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:57,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133109240] [2020-10-14 09:33:57,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:57,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:57,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:57,055 INFO L87 Difference]: Start difference. First operand 4405 states and 7195 transitions. Second operand 4 states. [2020-10-14 09:33:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:58,998 INFO L93 Difference]: Finished difference Result 10349 states and 16969 transitions. [2020-10-14 09:33:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:58,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 09:33:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:59,030 INFO L225 Difference]: With dead ends: 10349 [2020-10-14 09:33:59,030 INFO L226 Difference]: Without dead ends: 6307 [2020-10-14 09:33:59,041 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 09:33:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-10-14 09:33:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6161. [2020-10-14 09:33:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-14 09:33:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 10015 transitions. [2020-10-14 09:33:59,348 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 10015 transitions. Word has length 135 [2020-10-14 09:33:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:59,348 INFO L479 AbstractCegarLoop]: Abstraction has 6161 states and 10015 transitions. [2020-10-14 09:33:59,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 10015 transitions. [2020-10-14 09:33:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:33:59,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:59,353 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, 1, 1, 1, 1, 1, 1] [2020-10-14 09:33:59,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:33:59,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1952334613, now seen corresponding path program 1 times [2020-10-14 09:33:59,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:59,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934191932] [2020-10-14 09:33:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:59,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:04,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:04,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:34:04,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:34:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:34:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:04,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:34:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 09:34:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:04,786 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:34:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:34:04,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934191932] [2020-10-14 09:34:04,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:04,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:04,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278772993] [2020-10-14 09:34:04,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:04,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:04,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:04,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:04,854 INFO L87 Difference]: Start difference. First operand 6161 states and 10015 transitions. Second operand 4 states. [2020-10-14 09:34:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:08,193 INFO L93 Difference]: Finished difference Result 18059 states and 29329 transitions. [2020-10-14 09:34:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:08,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:34:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:08,242 INFO L225 Difference]: With dead ends: 18059 [2020-10-14 09:34:08,242 INFO L226 Difference]: Without dead ends: 11993 [2020-10-14 09:34:08,258 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 09:34:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11993 states. [2020-10-14 09:34:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11993 to 11991. [2020-10-14 09:34:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11991 states. [2020-10-14 09:34:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 19404 transitions. [2020-10-14 09:34:08,796 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 19404 transitions. Word has length 136 [2020-10-14 09:34:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:08,796 INFO L479 AbstractCegarLoop]: Abstraction has 11991 states and 19404 transitions. [2020-10-14 09:34:08,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 19404 transitions. [2020-10-14 09:34:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:34:08,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:08,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:08,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:34:08,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1312509264, now seen corresponding path program 1 times [2020-10-14 09:34:08,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:08,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373528724] [2020-10-14 09:34:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:13,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:13,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:34:13,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:34:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:34:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:13,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:34:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:34:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:14,191 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:14,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:14,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:34:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:14,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:14,235 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 09:34:14,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373528724] [2020-10-14 09:34:14,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:14,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:14,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225464782] [2020-10-14 09:34:14,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:14,238 INFO L87 Difference]: Start difference. First operand 11991 states and 19404 transitions. Second operand 4 states. [2020-10-14 09:34:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:18,027 INFO L93 Difference]: Finished difference Result 35785 states and 57874 transitions. [2020-10-14 09:34:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:18,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:34:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:18,078 INFO L225 Difference]: With dead ends: 35785 [2020-10-14 09:34:18,079 INFO L226 Difference]: Without dead ends: 23890 [2020-10-14 09:34:18,105 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 09:34:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23890 states. [2020-10-14 09:34:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23890 to 12008. [2020-10-14 09:34:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12008 states. [2020-10-14 09:34:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 19426 transitions. [2020-10-14 09:34:18,780 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 19426 transitions. Word has length 136 [2020-10-14 09:34:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:18,780 INFO L479 AbstractCegarLoop]: Abstraction has 12008 states and 19426 transitions. [2020-10-14 09:34:18,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 19426 transitions. [2020-10-14 09:34:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:34:18,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:18,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:18,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:34:18,788 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:18,788 INFO L82 PathProgramCache]: Analyzing trace with hash -862745196, now seen corresponding path program 1 times [2020-10-14 09:34:18,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:18,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964114232] [2020-10-14 09:34:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:23,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 09:34:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:34:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:24,191 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:34:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:24,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:34:24,240 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 09:34:24,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964114232] [2020-10-14 09:34:24,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:24,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:24,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284454658] [2020-10-14 09:34:24,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:24,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:24,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:24,242 INFO L87 Difference]: Start difference. First operand 12008 states and 19426 transitions. Second operand 4 states. [2020-10-14 09:34:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:26,585 INFO L93 Difference]: Finished difference Result 28644 states and 46524 transitions. [2020-10-14 09:34:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:26,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:34:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:26,622 INFO L225 Difference]: With dead ends: 28644 [2020-10-14 09:34:26,622 INFO L226 Difference]: Without dead ends: 17314 [2020-10-14 09:34:26,646 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 09:34:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17314 states. [2020-10-14 09:34:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17314 to 16880. [2020-10-14 09:34:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16880 states. [2020-10-14 09:34:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16880 states to 16880 states and 27146 transitions. [2020-10-14 09:34:27,523 INFO L78 Accepts]: Start accepts. Automaton has 16880 states and 27146 transitions. Word has length 137 [2020-10-14 09:34:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:27,523 INFO L479 AbstractCegarLoop]: Abstraction has 16880 states and 27146 transitions. [2020-10-14 09:34:27,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16880 states and 27146 transitions. [2020-10-14 09:34:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:34:27,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:27,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:27,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:34:27,529 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1008207763, now seen corresponding path program 1 times [2020-10-14 09:34:27,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:27,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324228838] [2020-10-14 09:34:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:32,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:34:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:34:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:32,926 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:32,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:32,960 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 09:34:32,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324228838] [2020-10-14 09:34:32,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:32,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:32,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334316111] [2020-10-14 09:34:32,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:32,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:32,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:32,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:32,961 INFO L87 Difference]: Start difference. First operand 16880 states and 27146 transitions. Second operand 4 states. [2020-10-14 09:34:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:37,200 INFO L93 Difference]: Finished difference Result 50439 states and 81088 transitions. [2020-10-14 09:34:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:37,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:34:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:37,252 INFO L225 Difference]: With dead ends: 50439 [2020-10-14 09:34:37,252 INFO L226 Difference]: Without dead ends: 33668 [2020-10-14 09:34:37,289 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 09:34:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33668 states. [2020-10-14 09:34:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33668 to 16914. [2020-10-14 09:34:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16914 states. [2020-10-14 09:34:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16914 states to 16914 states and 27194 transitions. [2020-10-14 09:34:38,468 INFO L78 Accepts]: Start accepts. Automaton has 16914 states and 27194 transitions. Word has length 137 [2020-10-14 09:34:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:38,468 INFO L479 AbstractCegarLoop]: Abstraction has 16914 states and 27194 transitions. [2020-10-14 09:34:38,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16914 states and 27194 transitions. [2020-10-14 09:34:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:34:38,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:38,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:38,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:34:38,474 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:38,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1881834089, now seen corresponding path program 1 times [2020-10-14 09:34:38,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:38,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449187668] [2020-10-14 09:34:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:43,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 09:34:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:34:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:43,979 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:44,016 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 09:34:44,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449187668] [2020-10-14 09:34:44,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:44,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:44,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537287518] [2020-10-14 09:34:44,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:44,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:44,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:44,018 INFO L87 Difference]: Start difference. First operand 16914 states and 27194 transitions. Second operand 4 states. [2020-10-14 09:34:44,403 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:34:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:47,135 INFO L93 Difference]: Finished difference Result 32662 states and 52692 transitions. [2020-10-14 09:34:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:47,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:34:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:47,169 INFO L225 Difference]: With dead ends: 32662 [2020-10-14 09:34:47,170 INFO L226 Difference]: Without dead ends: 21844 [2020-10-14 09:34:47,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21844 states. [2020-10-14 09:34:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21844 to 21842. [2020-10-14 09:34:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21842 states. [2020-10-14 09:34:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21842 states to 21842 states and 35082 transitions. [2020-10-14 09:34:48,561 INFO L78 Accepts]: Start accepts. Automaton has 21842 states and 35082 transitions. Word has length 137 [2020-10-14 09:34:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:48,561 INFO L479 AbstractCegarLoop]: Abstraction has 21842 states and 35082 transitions. [2020-10-14 09:34:48,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 21842 states and 35082 transitions. [2020-10-14 09:34:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:34:48,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:48,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:34:48,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:34:48,565 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 759154758, now seen corresponding path program 1 times [2020-10-14 09:34:48,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:48,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922288087] [2020-10-14 09:34:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:53,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:34:53,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:34:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:34:53,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:53,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:34:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 09:34:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:53,995 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:54,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:54,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:54,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:34:54,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:54,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:54,066 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 09:34:54,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922288087] [2020-10-14 09:34:54,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:54,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:54,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120703142] [2020-10-14 09:34:54,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:54,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:54,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:54,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:54,076 INFO L87 Difference]: Start difference. First operand 21842 states and 35082 transitions. Second operand 4 states. [2020-10-14 09:34:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:58,864 INFO L93 Difference]: Finished difference Result 64263 states and 103171 transitions. [2020-10-14 09:34:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:58,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-14 09:34:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:58,918 INFO L225 Difference]: With dead ends: 64263 [2020-10-14 09:34:58,918 INFO L226 Difference]: Without dead ends: 42562 [2020-10-14 09:34:58,943 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 09:34:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42562 states. [2020-10-14 09:35:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42562 to 42560. [2020-10-14 09:35:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42560 states. [2020-10-14 09:35:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42560 states to 42560 states and 68020 transitions. [2020-10-14 09:35:02,080 INFO L78 Accepts]: Start accepts. Automaton has 42560 states and 68020 transitions. Word has length 138 [2020-10-14 09:35:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:02,081 INFO L479 AbstractCegarLoop]: Abstraction has 42560 states and 68020 transitions. [2020-10-14 09:35:02,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 42560 states and 68020 transitions. [2020-10-14 09:35:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:35:02,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:02,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:02,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:35:02,087 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1887293597, now seen corresponding path program 1 times [2020-10-14 09:35:02,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:02,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49015213] [2020-10-14 09:35:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:07,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:35:07,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:35:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 09:35:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:07,553 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:07,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:07,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:07,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:07,611 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 09:35:07,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49015213] [2020-10-14 09:35:07,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:07,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:35:07,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495008207] [2020-10-14 09:35:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:35:07,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:35:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:35:07,613 INFO L87 Difference]: Start difference. First operand 42560 states and 68020 transitions. Second operand 5 states. [2020-10-14 09:35:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:14,277 INFO L93 Difference]: Finished difference Result 125645 states and 200934 transitions. [2020-10-14 09:35:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:35:14,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 09:35:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:14,379 INFO L225 Difference]: With dead ends: 125645 [2020-10-14 09:35:14,379 INFO L226 Difference]: Without dead ends: 83343 [2020-10-14 09:35:14,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:35:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83343 states. [2020-10-14 09:35:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83343 to 83341. [2020-10-14 09:35:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83341 states. [2020-10-14 09:35:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83341 states to 83341 states and 132720 transitions. [2020-10-14 09:35:21,325 INFO L78 Accepts]: Start accepts. Automaton has 83341 states and 132720 transitions. Word has length 138 [2020-10-14 09:35:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:21,326 INFO L479 AbstractCegarLoop]: Abstraction has 83341 states and 132720 transitions. [2020-10-14 09:35:21,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:35:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 83341 states and 132720 transitions. [2020-10-14 09:35:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 09:35:21,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:21,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:35:21,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:35:21,335 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:21,335 INFO L82 PathProgramCache]: Analyzing trace with hash 913510756, now seen corresponding path program 1 times [2020-10-14 09:35:21,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:21,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852363063] [2020-10-14 09:35:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 09:35:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:35:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:26,749 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:26,785 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 09:35:26,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852363063] [2020-10-14 09:35:26,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:26,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:26,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590202448] [2020-10-14 09:35:26,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:26,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:26,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:26,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:26,787 INFO L87 Difference]: Start difference. First operand 83341 states and 132720 transitions. Second operand 4 states. [2020-10-14 09:35:27,175 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:35:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:35:35,543 INFO L93 Difference]: Finished difference Result 158385 states and 253458 transitions. [2020-10-14 09:35:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:35:35,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 09:35:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:35:35,665 INFO L225 Difference]: With dead ends: 158385 [2020-10-14 09:35:35,665 INFO L226 Difference]: Without dead ends: 105007 [2020-10-14 09:35:35,704 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 09:35:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states. [2020-10-14 09:35:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105007 to 105005. [2020-10-14 09:35:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105005 states. [2020-10-14 09:35:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105005 states to 105005 states and 167280 transitions. [2020-10-14 09:35:44,475 INFO L78 Accepts]: Start accepts. Automaton has 105005 states and 167280 transitions. Word has length 139 [2020-10-14 09:35:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:44,475 INFO L479 AbstractCegarLoop]: Abstraction has 105005 states and 167280 transitions. [2020-10-14 09:35:44,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 105005 states and 167280 transitions. [2020-10-14 09:35:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:35:44,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:44,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:44,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:35:44,482 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:44,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1283293140, now seen corresponding path program 1 times [2020-10-14 09:35:44,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:44,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070086735] [2020-10-14 09:35:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 09:35:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:49,903 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:49,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:49,960 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 09:35:49,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070086735] [2020-10-14 09:35:49,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:49,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:49,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483383970] [2020-10-14 09:35:49,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:49,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:49,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:49,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:49,962 INFO L87 Difference]: Start difference. First operand 105005 states and 167280 transitions. Second operand 4 states. [2020-10-14 09:36:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:05,461 INFO L93 Difference]: Finished difference Result 308389 states and 490924 transitions. [2020-10-14 09:36:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:36:05,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-14 09:36:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:05,773 INFO L225 Difference]: With dead ends: 308389 [2020-10-14 09:36:05,774 INFO L226 Difference]: Without dead ends: 204204 [2020-10-14 09:36:06,121 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 09:36:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204204 states. [2020-10-14 09:36:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204204 to 204195. [2020-10-14 09:36:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204195 states. [2020-10-14 09:36:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204195 states to 204195 states and 323443 transitions. [2020-10-14 09:36:20,579 INFO L78 Accepts]: Start accepts. Automaton has 204195 states and 323443 transitions. Word has length 140 [2020-10-14 09:36:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:20,579 INFO L479 AbstractCegarLoop]: Abstraction has 204195 states and 323443 transitions. [2020-10-14 09:36:20,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 204195 states and 323443 transitions. [2020-10-14 09:36:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:36:20,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:20,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:20,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:36:20,592 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:20,593 INFO L82 PathProgramCache]: Analyzing trace with hash -587182631, now seen corresponding path program 1 times [2020-10-14 09:36:20,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:20,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129064172] [2020-10-14 09:36:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:36:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:36:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6485 [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:36:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:27,467 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:36:27,500 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 09:36:27,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129064172] [2020-10-14 09:36:27,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:27,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:27,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702178435] [2020-10-14 09:36:27,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:27,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:27,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:27,502 INFO L87 Difference]: Start difference. First operand 204195 states and 323443 transitions. Second operand 4 states.