/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:20:30,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:20:30,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:20:30,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:20:30,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:20:30,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:20:30,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:20:30,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:20:30,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:20:30,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:20:30,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:20:30,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:20:30,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:20:30,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:20:30,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:20:30,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:20:30,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:20:30,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:20:30,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:20:30,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:20:30,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:20:30,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:20:30,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:20:30,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:20:30,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:20:30,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:20:30,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:20:30,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:20:30,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:20:30,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:20:30,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:20:30,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:20:30,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:20:30,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:20:30,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:20:30,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:20:30,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:20:30,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:20:30,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:20:30,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:20:30,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:20:30,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:20:30,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:20:30,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:20:30,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:20:30,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:20:30,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:20:30,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:20:30,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:20:30,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:20:30,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:20:30,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:20:30,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:20:30,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:20:30,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:20:30,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:20:30,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:20:30,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:20:30,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:20:30,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:20:30,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:20:30,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:20:30,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:20:30,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:20:30,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:20:30,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:20:30,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:20:31,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:20:31,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:20:31,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:20:31,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:20:31,161 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:20:31,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:20:31,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4516ff994/33ea615043504f8184bb7ad906afcfa0/FLAG4b5e07382 [2020-10-14 08:20:31,751 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:20:31,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:20:31,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4516ff994/33ea615043504f8184bb7ad906afcfa0/FLAG4b5e07382 [2020-10-14 08:20:32,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4516ff994/33ea615043504f8184bb7ad906afcfa0 [2020-10-14 08:20:32,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:20:32,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:20:32,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:20:32,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:20:32,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:20:32,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d507481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32, skipping insertion in model container [2020-10-14 08:20:32,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:20:32,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:20:32,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:20:32,648 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:20:32,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:20:32,843 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:20:32,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32 WrapperNode [2020-10-14 08:20:32,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:20:32,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:20:32,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:20:32,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:20:32,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... [2020-10-14 08:20:32,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:20:32,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:20:32,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:20:32,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:20:32,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:20:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:20:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:20:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:20:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:20:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:20:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:20:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:20:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:20:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:20:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:20:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:20:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:20:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:20:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:20:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:20:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:20:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:20:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:20:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:20:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:20:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:20:34,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:20:34,288 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:20:34,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:20:34 BoogieIcfgContainer [2020-10-14 08:20:34,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:20:34,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:20:34,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:20:34,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:20:34,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:20:32" (1/3) ... [2020-10-14 08:20:34,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddf92d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:20:34, skipping insertion in model container [2020-10-14 08:20:34,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:20:32" (2/3) ... [2020-10-14 08:20:34,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddf92d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:20:34, skipping insertion in model container [2020-10-14 08:20:34,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:20:34" (3/3) ... [2020-10-14 08:20:34,302 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 08:20:34,313 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:20:34,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 08:20:34,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 08:20:34,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:20:34,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:20:34,360 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:20:34,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:20:34,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:20:34,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:20:34,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:20:34,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:20:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2020-10-14 08:20:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:20:34,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:20:34,398 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] [2020-10-14 08:20:34,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:20:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:20:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1598818953, now seen corresponding path program 1 times [2020-10-14 08:20:34,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:20:34,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472167330] [2020-10-14 08:20:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:20:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:39,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:20:39,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:20:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:20:39,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:20:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:20:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:20:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:20:40,267 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:20:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:20:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:40,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:20:40,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:20:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:20:40,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:40,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:40,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:20:40,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:20:40,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:20:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:20:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:20:40,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472167330] [2020-10-14 08:20:40,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:20:40,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:20:40,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731546267] [2020-10-14 08:20:40,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:20:40,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:20:40,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:20:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:20:40,364 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 5 states. [2020-10-14 08:20:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:20:42,905 INFO L93 Difference]: Finished difference Result 709 states and 1257 transitions. [2020-10-14 08:20:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:20:42,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 08:20:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:20:42,928 INFO L225 Difference]: With dead ends: 709 [2020-10-14 08:20:42,928 INFO L226 Difference]: Without dead ends: 472 [2020-10-14 08:20:42,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:20:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-14 08:20:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 458. [2020-10-14 08:20:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-14 08:20:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 668 transitions. [2020-10-14 08:20:43,023 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 668 transitions. Word has length 96 [2020-10-14 08:20:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:20:43,024 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 668 transitions. [2020-10-14 08:20:43,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:20:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 668 transitions. [2020-10-14 08:20:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:20:43,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:20:43,030 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] [2020-10-14 08:20:43,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:20:43,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:20:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:20:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1615497314, now seen corresponding path program 1 times [2020-10-14 08:20:43,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:20:43,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393200639] [2020-10-14 08:20:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:20:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:20:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:20:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:20:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:48,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:20:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:20:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:20:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:20:48,367 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:20:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:20:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:20:48,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:20:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:20:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:48,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:20:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:20:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:20:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:20:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:20:48,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393200639] [2020-10-14 08:20:48,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:20:48,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:20:48,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155301032] [2020-10-14 08:20:48,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:20:48,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:20:48,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:20:48,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:20:48,415 INFO L87 Difference]: Start difference. First operand 458 states and 668 transitions. Second operand 4 states. [2020-10-14 08:20:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:20:49,963 INFO L93 Difference]: Finished difference Result 1335 states and 1944 transitions. [2020-10-14 08:20:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:20:49,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-14 08:20:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:20:49,972 INFO L225 Difference]: With dead ends: 1335 [2020-10-14 08:20:49,972 INFO L226 Difference]: Without dead ends: 902 [2020-10-14 08:20:49,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:20:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-14 08:20:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 461. [2020-10-14 08:20:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-14 08:20:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 672 transitions. [2020-10-14 08:20:50,046 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 672 transitions. Word has length 97 [2020-10-14 08:20:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:20:50,046 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 672 transitions. [2020-10-14 08:20:50,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:20:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 672 transitions. [2020-10-14 08:20:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:20:50,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:20:50,058 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] [2020-10-14 08:20:50,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:20:50,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:20:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:20:50,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1082627208, now seen corresponding path program 1 times [2020-10-14 08:20:50,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:20:50,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311656551] [2020-10-14 08:20:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:20:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:55,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:55,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:20:55,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:20:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:20:55,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:55,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:20:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:20:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 08:20:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:20:55,485 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:20:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:20:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:20:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:20:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:20:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:20:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:20:55,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:20:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:20:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:20:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:20:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:20:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:20:55,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311656551] [2020-10-14 08:20:55,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:20:55,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:20:55,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898738675] [2020-10-14 08:20:55,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:20:55,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:20:55,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:20:55,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:20:55,546 INFO L87 Difference]: Start difference. First operand 461 states and 672 transitions. Second operand 5 states. [2020-10-14 08:20:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:20:57,463 INFO L93 Difference]: Finished difference Result 1150 states and 1686 transitions. [2020-10-14 08:20:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:20:57,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 08:20:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:20:57,475 INFO L225 Difference]: With dead ends: 1150 [2020-10-14 08:20:57,476 INFO L226 Difference]: Without dead ends: 871 [2020-10-14 08:20:57,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:20:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-14 08:20:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 848. [2020-10-14 08:20:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-14 08:20:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1227 transitions. [2020-10-14 08:20:57,539 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1227 transitions. Word has length 98 [2020-10-14 08:20:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:20:57,542 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1227 transitions. [2020-10-14 08:20:57,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:20:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1227 transitions. [2020-10-14 08:20:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:20:57,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:20:57,544 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] [2020-10-14 08:20:57,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:20:57,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:20:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:20:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -316788731, now seen corresponding path program 1 times [2020-10-14 08:20:57,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:20:57,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964890376] [2020-10-14 08:20:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:20:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:20:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:20:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:02,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:21:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:21:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:02,795 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:21:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:02,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:21:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:02,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964890376] [2020-10-14 08:21:02,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:02,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:21:02,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100407376] [2020-10-14 08:21:02,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:21:02,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:21:02,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:02,847 INFO L87 Difference]: Start difference. First operand 848 states and 1227 transitions. Second operand 4 states. [2020-10-14 08:21:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:04,813 INFO L93 Difference]: Finished difference Result 2344 states and 3376 transitions. [2020-10-14 08:21:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:21:04,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-14 08:21:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:04,824 INFO L225 Difference]: With dead ends: 2344 [2020-10-14 08:21:04,824 INFO L226 Difference]: Without dead ends: 1630 [2020-10-14 08:21:04,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-10-14 08:21:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 857. [2020-10-14 08:21:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-10-14 08:21:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1239 transitions. [2020-10-14 08:21:04,935 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1239 transitions. Word has length 99 [2020-10-14 08:21:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:04,936 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1239 transitions. [2020-10-14 08:21:04,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:21:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1239 transitions. [2020-10-14 08:21:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:21:04,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:04,939 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] [2020-10-14 08:21:04,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:21:04,940 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1747941703, now seen corresponding path program 1 times [2020-10-14 08:21:04,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:04,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557099555] [2020-10-14 08:21:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:09,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:21:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 08:21:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:10,196 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:10,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:21:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:10,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:10,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557099555] [2020-10-14 08:21:10,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:10,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:10,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531891138] [2020-10-14 08:21:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:10,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:10,238 INFO L87 Difference]: Start difference. First operand 857 states and 1239 transitions. Second operand 5 states. [2020-10-14 08:21:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:11,986 INFO L93 Difference]: Finished difference Result 2444 states and 3514 transitions. [2020-10-14 08:21:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:21:11,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 08:21:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:11,999 INFO L225 Difference]: With dead ends: 2444 [2020-10-14 08:21:11,999 INFO L226 Difference]: Without dead ends: 1635 [2020-10-14 08:21:12,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:21:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2020-10-14 08:21:12,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1590. [2020-10-14 08:21:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-10-14 08:21:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2272 transitions. [2020-10-14 08:21:12,112 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2272 transitions. Word has length 100 [2020-10-14 08:21:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:12,112 INFO L479 AbstractCegarLoop]: Abstraction has 1590 states and 2272 transitions. [2020-10-14 08:21:12,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:21:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2272 transitions. [2020-10-14 08:21:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:21:12,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:12,116 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] [2020-10-14 08:21:12,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:21:12,117 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -656338877, now seen corresponding path program 1 times [2020-10-14 08:21:12,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:12,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024476391] [2020-10-14 08:21:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:16,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:21:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:17,336 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:17,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024476391] [2020-10-14 08:21:17,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:17,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:21:17,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666012395] [2020-10-14 08:21:17,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:21:17,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:17,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:21:17,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:17,362 INFO L87 Difference]: Start difference. First operand 1590 states and 2272 transitions. Second operand 4 states. [2020-10-14 08:21:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:19,185 INFO L93 Difference]: Finished difference Result 4548 states and 6509 transitions. [2020-10-14 08:21:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:21:19,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:21:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:19,200 INFO L225 Difference]: With dead ends: 4548 [2020-10-14 08:21:19,201 INFO L226 Difference]: Without dead ends: 3129 [2020-10-14 08:21:19,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-14 08:21:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1596. [2020-10-14 08:21:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2020-10-14 08:21:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2278 transitions. [2020-10-14 08:21:19,326 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2278 transitions. Word has length 101 [2020-10-14 08:21:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:19,326 INFO L479 AbstractCegarLoop]: Abstraction has 1596 states and 2278 transitions. [2020-10-14 08:21:19,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:21:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2278 transitions. [2020-10-14 08:21:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:21:19,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:19,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:21:19,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:21:19,330 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash 518518748, now seen corresponding path program 1 times [2020-10-14 08:21:19,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:19,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952324556] [2020-10-14 08:21:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:24,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:21:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:21:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:21:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:24,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:21:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:21:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 08:21:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:24,554 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:24,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:21:24,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:24,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:24,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952324556] [2020-10-14 08:21:24,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:24,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:21:24,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450441914] [2020-10-14 08:21:24,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:21:24,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:24,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:21:24,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:24,597 INFO L87 Difference]: Start difference. First operand 1596 states and 2278 transitions. Second operand 4 states. [2020-10-14 08:21:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:26,448 INFO L93 Difference]: Finished difference Result 4058 states and 5859 transitions. [2020-10-14 08:21:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:21:26,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:21:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:26,460 INFO L225 Difference]: With dead ends: 4058 [2020-10-14 08:21:26,460 INFO L226 Difference]: Without dead ends: 3061 [2020-10-14 08:21:26,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:21:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2020-10-14 08:21:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 3016. [2020-10-14 08:21:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3016 states. [2020-10-14 08:21:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 4261 transitions. [2020-10-14 08:21:26,674 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 4261 transitions. Word has length 102 [2020-10-14 08:21:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:26,676 INFO L479 AbstractCegarLoop]: Abstraction has 3016 states and 4261 transitions. [2020-10-14 08:21:26,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:21:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 4261 transitions. [2020-10-14 08:21:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:21:26,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:26,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:21:26,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:21:26,683 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1173961849, now seen corresponding path program 1 times [2020-10-14 08:21:26,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:26,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307891007] [2020-10-14 08:21:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:21:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 08:21:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:31,927 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:31,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307891007] [2020-10-14 08:21:31,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:31,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:31,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796189438] [2020-10-14 08:21:31,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:31,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:31,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:31,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:31,959 INFO L87 Difference]: Start difference. First operand 3016 states and 4261 transitions. Second operand 5 states. [2020-10-14 08:21:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:33,789 INFO L93 Difference]: Finished difference Result 8181 states and 11630 transitions. [2020-10-14 08:21:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:21:33,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 08:21:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:33,807 INFO L225 Difference]: With dead ends: 8181 [2020-10-14 08:21:33,807 INFO L226 Difference]: Without dead ends: 5219 [2020-10-14 08:21:33,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:21:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2020-10-14 08:21:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 5207. [2020-10-14 08:21:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5207 states. [2020-10-14 08:21:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7367 transitions. [2020-10-14 08:21:34,141 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7367 transitions. Word has length 102 [2020-10-14 08:21:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:34,141 INFO L479 AbstractCegarLoop]: Abstraction has 5207 states and 7367 transitions. [2020-10-14 08:21:34,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:21:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7367 transitions. [2020-10-14 08:21:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:21:34,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:34,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:21:34,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:21:34,149 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1396458746, now seen corresponding path program 1 times [2020-10-14 08:21:34,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:34,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516966493] [2020-10-14 08:21:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:21:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:39,478 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:21:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:39,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:21:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:39,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516966493] [2020-10-14 08:21:39,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:39,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:39,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054776089] [2020-10-14 08:21:39,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:39,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:39,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:39,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:39,523 INFO L87 Difference]: Start difference. First operand 5207 states and 7367 transitions. Second operand 5 states. [2020-10-14 08:21:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:40,756 INFO L93 Difference]: Finished difference Result 10336 states and 14622 transitions. [2020-10-14 08:21:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:21:40,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 08:21:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:40,772 INFO L225 Difference]: With dead ends: 10336 [2020-10-14 08:21:40,773 INFO L226 Difference]: Without dead ends: 5195 [2020-10-14 08:21:40,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:21:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2020-10-14 08:21:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5195. [2020-10-14 08:21:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5195 states. [2020-10-14 08:21:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 7347 transitions. [2020-10-14 08:21:41,056 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 7347 transitions. Word has length 102 [2020-10-14 08:21:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:41,057 INFO L479 AbstractCegarLoop]: Abstraction has 5195 states and 7347 transitions. [2020-10-14 08:21:41,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:21:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 7347 transitions. [2020-10-14 08:21:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:21:41,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:41,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:21:41,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:21:41,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash -487708601, now seen corresponding path program 1 times [2020-10-14 08:21:41,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:41,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192078538] [2020-10-14 08:21:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:46,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:46,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:21:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:21:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:21:46,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:46,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:21:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 08:21:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:46,425 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:46,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:46,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:21:46,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:46,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:46,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:21:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:46,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192078538] [2020-10-14 08:21:46,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:46,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:46,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913581939] [2020-10-14 08:21:46,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:46,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:46,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:46,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:46,480 INFO L87 Difference]: Start difference. First operand 5195 states and 7347 transitions. Second operand 5 states. [2020-10-14 08:21:48,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:48,144 INFO L93 Difference]: Finished difference Result 11479 states and 16158 transitions. [2020-10-14 08:21:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:21:48,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 08:21:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:48,170 INFO L225 Difference]: With dead ends: 11479 [2020-10-14 08:21:48,170 INFO L226 Difference]: Without dead ends: 6544 [2020-10-14 08:21:48,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:21:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2020-10-14 08:21:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6515. [2020-10-14 08:21:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6515 states. [2020-10-14 08:21:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6515 states to 6515 states and 9031 transitions. [2020-10-14 08:21:48,545 INFO L78 Accepts]: Start accepts. Automaton has 6515 states and 9031 transitions. Word has length 102 [2020-10-14 08:21:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:48,546 INFO L479 AbstractCegarLoop]: Abstraction has 6515 states and 9031 transitions. [2020-10-14 08:21:48,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:21:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6515 states and 9031 transitions. [2020-10-14 08:21:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:21:48,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:48,553 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] [2020-10-14 08:21:48,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:21:48,553 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash -998438445, now seen corresponding path program 1 times [2020-10-14 08:21:48,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:48,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120631167] [2020-10-14 08:21:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:21:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:21:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:53,806 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:53,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:53,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:53,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120631167] [2020-10-14 08:21:53,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:53,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:53,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453245247] [2020-10-14 08:21:53,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:53,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:53,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:53,841 INFO L87 Difference]: Start difference. First operand 6515 states and 9031 transitions. Second operand 5 states. [2020-10-14 08:21:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:21:55,233 INFO L93 Difference]: Finished difference Result 11659 states and 16173 transitions. [2020-10-14 08:21:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:21:55,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 08:21:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:21:55,245 INFO L225 Difference]: With dead ends: 11659 [2020-10-14 08:21:55,245 INFO L226 Difference]: Without dead ends: 5374 [2020-10-14 08:21:55,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:21:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2020-10-14 08:21:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 5374. [2020-10-14 08:21:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5374 states. [2020-10-14 08:21:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 7410 transitions. [2020-10-14 08:21:55,600 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 7410 transitions. Word has length 106 [2020-10-14 08:21:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:21:55,600 INFO L479 AbstractCegarLoop]: Abstraction has 5374 states and 7410 transitions. [2020-10-14 08:21:55,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:21:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 7410 transitions. [2020-10-14 08:21:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:21:55,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:21:55,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:21:55,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:21:55,606 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:21:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:21:55,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1007623333, now seen corresponding path program 1 times [2020-10-14 08:21:55,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:21:55,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552097149] [2020-10-14 08:21:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:21:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 08:21:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:21:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2755 [2020-10-14 08:21:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:58,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:21:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:21:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:21:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:58,644 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:21:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:21:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:21:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:21:58,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:21:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:21:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:21:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:21:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:21:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:21:58,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552097149] [2020-10-14 08:21:58,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:21:58,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:21:58,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452719396] [2020-10-14 08:21:58,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:21:58,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:21:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:21:58,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:21:58,679 INFO L87 Difference]: Start difference. First operand 5374 states and 7410 transitions. Second operand 5 states. [2020-10-14 08:22:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:00,925 INFO L93 Difference]: Finished difference Result 9710 states and 13536 transitions. [2020-10-14 08:22:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:22:00,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 08:22:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:00,940 INFO L225 Difference]: With dead ends: 9710 [2020-10-14 08:22:00,940 INFO L226 Difference]: Without dead ends: 6282 [2020-10-14 08:22:00,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:22:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2020-10-14 08:22:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5744. [2020-10-14 08:22:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5744 states. [2020-10-14 08:22:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5744 states to 5744 states and 7818 transitions. [2020-10-14 08:22:01,569 INFO L78 Accepts]: Start accepts. Automaton has 5744 states and 7818 transitions. Word has length 108 [2020-10-14 08:22:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:01,569 INFO L479 AbstractCegarLoop]: Abstraction has 5744 states and 7818 transitions. [2020-10-14 08:22:01,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:22:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5744 states and 7818 transitions. [2020-10-14 08:22:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:22:01,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:01,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:22:01,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:22:01,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash 728057739, now seen corresponding path program 1 times [2020-10-14 08:22:01,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:01,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532306073] [2020-10-14 08:22:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 08:22:05,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:22:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3735 [2020-10-14 08:22:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:22:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:22:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:22:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:05,583 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:22:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:22:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:22:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:22:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:22:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:22:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:22:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:22:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:05,611 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 08:22:05,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532306073] [2020-10-14 08:22:05,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:22:05,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:22:05,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935028066] [2020-10-14 08:22:05,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:22:05,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:22:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:22:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:22:05,614 INFO L87 Difference]: Start difference. First operand 5744 states and 7818 transitions. Second operand 5 states. [2020-10-14 08:22:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:06,915 INFO L93 Difference]: Finished difference Result 9349 states and 12740 transitions. [2020-10-14 08:22:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:22:06,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 08:22:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:06,923 INFO L225 Difference]: With dead ends: 9349 [2020-10-14 08:22:06,923 INFO L226 Difference]: Without dead ends: 3902 [2020-10-14 08:22:06,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:22:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2020-10-14 08:22:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3902. [2020-10-14 08:22:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3902 states. [2020-10-14 08:22:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5285 transitions. [2020-10-14 08:22:07,259 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5285 transitions. Word has length 108 [2020-10-14 08:22:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:07,259 INFO L479 AbstractCegarLoop]: Abstraction has 3902 states and 5285 transitions. [2020-10-14 08:22:07,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:22:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5285 transitions. [2020-10-14 08:22:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 08:22:07,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:07,263 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] [2020-10-14 08:22:07,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:22:07,263 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:07,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1455532818, now seen corresponding path program 1 times [2020-10-14 08:22:07,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:07,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352480828] [2020-10-14 08:22:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:07,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 08:22:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:22:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:22:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:12,553 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:22:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:22:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:12,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:12,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:22:12,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:22:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:22:12,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:12,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:22:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:22:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:22:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:22:12,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352480828] [2020-10-14 08:22:12,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:22:12,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:22:12,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189370099] [2020-10-14 08:22:12,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:22:12,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:22:12,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:22:12,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:22:12,599 INFO L87 Difference]: Start difference. First operand 3902 states and 5285 transitions. Second operand 6 states. [2020-10-14 08:22:12,824 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 08:22:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:14,421 INFO L93 Difference]: Finished difference Result 8582 states and 12115 transitions. [2020-10-14 08:22:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:22:14,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-14 08:22:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:14,434 INFO L225 Difference]: With dead ends: 8582 [2020-10-14 08:22:14,434 INFO L226 Difference]: Without dead ends: 5810 [2020-10-14 08:22:14,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:22:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2020-10-14 08:22:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5772. [2020-10-14 08:22:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5772 states. [2020-10-14 08:22:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 8048 transitions. [2020-10-14 08:22:15,055 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 8048 transitions. Word has length 112 [2020-10-14 08:22:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:15,055 INFO L479 AbstractCegarLoop]: Abstraction has 5772 states and 8048 transitions. [2020-10-14 08:22:15,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:22:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 8048 transitions. [2020-10-14 08:22:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 08:22:15,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:15,059 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] [2020-10-14 08:22:15,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:22:15,059 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:15,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1301085613, now seen corresponding path program 1 times [2020-10-14 08:22:15,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:15,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980707949] [2020-10-14 08:22:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 08:22:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:22:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:20,305 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:22:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:22:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:22:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:22:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:22:20,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:20,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:22:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:22:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:22:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:22:20,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980707949] [2020-10-14 08:22:20,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:22:20,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:22:20,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587372162] [2020-10-14 08:22:20,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:22:20,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:22:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:22:20,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:22:20,336 INFO L87 Difference]: Start difference. First operand 5772 states and 8048 transitions. Second operand 5 states. [2020-10-14 08:22:20,539 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:22:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:21,991 INFO L93 Difference]: Finished difference Result 8939 states and 13063 transitions. [2020-10-14 08:22:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:22:21,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 08:22:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:22,001 INFO L225 Difference]: With dead ends: 8939 [2020-10-14 08:22:22,001 INFO L226 Difference]: Without dead ends: 5838 [2020-10-14 08:22:22,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:22:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-10-14 08:22:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5838. [2020-10-14 08:22:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5838 states. [2020-10-14 08:22:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 8088 transitions. [2020-10-14 08:22:22,566 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 8088 transitions. Word has length 112 [2020-10-14 08:22:22,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:22,566 INFO L479 AbstractCegarLoop]: Abstraction has 5838 states and 8088 transitions. [2020-10-14 08:22:22,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:22:22,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 8088 transitions. [2020-10-14 08:22:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 08:22:22,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:22,570 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] [2020-10-14 08:22:22,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:22:22,570 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1309276430, now seen corresponding path program 1 times [2020-10-14 08:22:22,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:22,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074820229] [2020-10-14 08:22:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:22:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 08:22:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:22:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:23,259 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:22:23,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:22:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:23,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:22:23,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:22:23,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:22:23,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:23,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:22:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:22:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:22:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:22:23,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074820229] [2020-10-14 08:22:23,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:22:23,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:22:23,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828310692] [2020-10-14 08:22:23,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:22:23,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:22:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:22:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:22:23,290 INFO L87 Difference]: Start difference. First operand 5838 states and 8088 transitions. Second operand 5 states. [2020-10-14 08:22:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:24,659 INFO L93 Difference]: Finished difference Result 10714 states and 14843 transitions. [2020-10-14 08:22:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:22:24,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 08:22:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:24,666 INFO L225 Difference]: With dead ends: 10714 [2020-10-14 08:22:24,666 INFO L226 Difference]: Without dead ends: 5055 [2020-10-14 08:22:24,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:22:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2020-10-14 08:22:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5053. [2020-10-14 08:22:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5053 states. [2020-10-14 08:22:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 6974 transitions. [2020-10-14 08:22:25,106 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 6974 transitions. Word has length 112 [2020-10-14 08:22:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:25,106 INFO L479 AbstractCegarLoop]: Abstraction has 5053 states and 6974 transitions. [2020-10-14 08:22:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:22:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 6974 transitions. [2020-10-14 08:22:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 08:22:25,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:25,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:22:25,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:22:25,110 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:25,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2035974663, now seen corresponding path program 1 times [2020-10-14 08:22:25,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:25,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314294365] [2020-10-14 08:22:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:30,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:30,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 08:22:30,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:22:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:22:30,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:30,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 08:22:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:22:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 08:22:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:30,795 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-10-14 08:22:30,989 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-14 08:22:31,451 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:22:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:22:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:22:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:22:31,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:22:31,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:22:31,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:22:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:22:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:22:31,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:22:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:22:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:22:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:22:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:22:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:22:31,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314294365] [2020-10-14 08:22:31,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:22:31,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-14 08:22:31,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967431194] [2020-10-14 08:22:31,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 08:22:31,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:22:31,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 08:22:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-14 08:22:31,530 INFO L87 Difference]: Start difference. First operand 5053 states and 6974 transitions. Second operand 19 states. [2020-10-14 08:22:31,798 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-14 08:22:32,741 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-14 08:22:33,024 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-14 08:22:33,672 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-14 08:22:34,083 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-14 08:22:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:22:39,469 INFO L93 Difference]: Finished difference Result 13258 states and 19047 transitions. [2020-10-14 08:22:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 08:22:39,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 114 [2020-10-14 08:22:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:22:39,482 INFO L225 Difference]: With dead ends: 13258 [2020-10-14 08:22:39,482 INFO L226 Difference]: Without dead ends: 11971 [2020-10-14 08:22:39,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 08:22:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11971 states. [2020-10-14 08:22:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11971 to 5552. [2020-10-14 08:22:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5552 states. [2020-10-14 08:22:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 7576 transitions. [2020-10-14 08:22:40,000 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 7576 transitions. Word has length 114 [2020-10-14 08:22:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:22:40,000 INFO L479 AbstractCegarLoop]: Abstraction has 5552 states and 7576 transitions. [2020-10-14 08:22:40,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 08:22:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 7576 transitions. [2020-10-14 08:22:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 08:22:40,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:22:40,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:22:40,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:22:40,004 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:22:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:22:40,005 INFO L82 PathProgramCache]: Analyzing trace with hash 816360586, now seen corresponding path program 1 times [2020-10-14 08:22:40,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:22:40,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722048599] [2020-10-14 08:22:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:22:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 08:22:40,050 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 08:22:40,050 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 08:22:40,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:22:40,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 08:22:40 BoogieIcfgContainer [2020-10-14 08:22:40,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 08:22:40,101 INFO L168 Benchmark]: Toolchain (without parser) took 128012.51 ms. Allocated memory was 146.3 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 99.5 MB in the beginning and 380.5 MB in the end (delta: -281.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,102 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.6 MB in the beginning and 119.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.50 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 99.1 MB in the beginning and 172.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,103 INFO L168 Benchmark]: Boogie Preprocessor took 78.04 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,103 INFO L168 Benchmark]: RCFGBuilder took 1366.70 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.9 MB in the beginning and 188.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,104 INFO L168 Benchmark]: TraceAbstraction took 125803.81 ms. Allocated memory was 235.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 188.6 MB in the beginning and 380.5 MB in the end (delta: -191.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2020-10-14 08:22:40,107 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.6 MB in the beginning and 119.1 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.50 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 99.1 MB in the beginning and 172.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.04 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1366.70 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.9 MB in the beginning and 188.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 125803.81 ms. Allocated memory was 235.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 188.6 MB in the beginning and 380.5 MB in the end (delta: -191.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 527]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1142; [L69] int __return_1270; [L70] int __return_1696; [L71] int __return_1389; [L72] int __return_1499; [L75] int main__c1; [L76] int main__i2; [L77] main__c1 = 0 [L78] ep12 = __VERIFIER_nondet_bool() [L79] ep13 = __VERIFIER_nondet_bool() [L80] ep21 = __VERIFIER_nondet_bool() [L81] ep23 = __VERIFIER_nondet_bool() [L82] ep31 = __VERIFIER_nondet_bool() [L83] ep32 = __VERIFIER_nondet_bool() [L84] id1 = __VERIFIER_nondet_char() [L85] r1 = __VERIFIER_nondet_uchar() [L86] st1 = __VERIFIER_nondet_char() [L87] nl1 = __VERIFIER_nondet_char() [L88] m1 = __VERIFIER_nondet_char() [L89] max1 = __VERIFIER_nondet_char() [L90] mode1 = __VERIFIER_nondet_bool() [L91] id2 = __VERIFIER_nondet_char() [L92] r2 = __VERIFIER_nondet_uchar() [L93] st2 = __VERIFIER_nondet_char() [L94] nl2 = __VERIFIER_nondet_char() [L95] m2 = __VERIFIER_nondet_char() [L96] max2 = __VERIFIER_nondet_char() [L97] mode2 = __VERIFIER_nondet_bool() [L98] id3 = __VERIFIER_nondet_char() [L99] r3 = __VERIFIER_nondet_uchar() [L100] st3 = __VERIFIER_nondet_char() [L101] nl3 = __VERIFIER_nondet_char() [L102] m3 = __VERIFIER_nondet_char() [L103] max3 = __VERIFIER_nondet_char() [L104] mode3 = __VERIFIER_nondet_bool() [L106] _Bool init__r121; [L107] _Bool init__r131; [L108] _Bool init__r211; [L109] _Bool init__r231; [L110] _Bool init__r311; [L111] _Bool init__r321; [L112] _Bool init__r122; [L113] int init__tmp; [L114] _Bool init__r132; [L115] int init__tmp___0; [L116] _Bool init__r212; [L117] int init__tmp___1; [L118] _Bool init__r232; [L119] int init__tmp___2; [L120] _Bool init__r312; [L121] int init__tmp___3; [L122] _Bool init__r322; [L123] int init__tmp___4; [L124] int init__tmp___5; [L125] init__r121 = ep12 [L126] init__r131 = ep13 [L127] init__r211 = ep21 [L128] init__r231 = ep23 [L129] init__r311 = ep31 [L130] init__r321 = ep32 [L131] COND FALSE !(!(init__r121 == 0)) [L1833] COND TRUE !(init__r131 == 0) [L1835] COND TRUE !(ep32 == 0) [L1837] init__tmp = 1 [L135] init__r122 = (_Bool)init__tmp [L136] COND TRUE !(init__r131 == 0) [L138] init__tmp___0 = 1 [L140] init__r132 = (_Bool)init__tmp___0 [L141] COND TRUE !(init__r211 == 0) [L143] init__tmp___1 = 1 [L145] init__r212 = (_Bool)init__tmp___1 [L146] COND FALSE !(!(init__r231 == 0)) [L1764] COND TRUE !(init__r211 == 0) [L1766] COND TRUE !(ep13 == 0) [L1768] init__tmp___2 = 1 [L150] init__r232 = (_Bool)init__tmp___2 [L151] COND FALSE !(!(init__r311 == 0)) [L1741] COND TRUE !(init__r321 == 0) [L1743] COND TRUE !(ep21 == 0) [L1745] init__tmp___3 = 1 [L155] init__r312 = (_Bool)init__tmp___3 [L156] COND TRUE !(init__r321 == 0) [L158] init__tmp___4 = 1 [L160] init__r322 = (_Bool)init__tmp___4 [L161] COND TRUE ((int)id1) != ((int)id2) [L163] COND TRUE ((int)id1) != ((int)id3) [L165] COND TRUE ((int)id2) != ((int)id3) [L167] COND TRUE ((int)id1) >= 0 [L169] COND TRUE ((int)id2) >= 0 [L171] COND TRUE ((int)id3) >= 0 [L173] COND TRUE ((int)r1) == 0 [L175] COND TRUE ((int)r2) == 0 [L177] COND TRUE ((int)r3) == 0 [L179] COND TRUE !(init__r122 == 0) [L181] COND TRUE !(init__r132 == 0) [L183] COND TRUE !(init__r212 == 0) [L185] COND TRUE !(init__r232 == 0) [L187] COND TRUE !(init__r312 == 0) [L189] COND TRUE !(init__r322 == 0) [L191] COND TRUE ((int)max1) == ((int)id1) [L193] COND TRUE ((int)max2) == ((int)id2) [L195] COND TRUE ((int)max3) == ((int)id3) [L197] COND TRUE ((int)st1) == 0 [L199] COND TRUE ((int)st2) == 0 [L201] COND TRUE ((int)st3) == 0 [L203] COND TRUE ((int)nl1) == 0 [L205] COND TRUE ((int)nl2) == 0 [L207] COND TRUE ((int)nl3) == 0 [L209] COND TRUE ((int)mode1) == 0 [L211] COND TRUE ((int)mode2) == 0 [L213] COND TRUE ((int)mode3) == 0 [L215] init__tmp___5 = 1 [L216] __return_1142 = init__tmp___5 [L217] main__i2 = __return_1142 [L218] COND TRUE main__i2 != 0 [L220] p12_old = nomsg [L221] p12_new = nomsg [L222] p13_old = nomsg [L223] p13_new = nomsg [L224] p21_old = nomsg [L225] p21_new = nomsg [L226] p23_old = nomsg [L227] p23_new = nomsg [L228] p31_old = nomsg [L229] p31_new = nomsg [L230] p32_old = nomsg [L231] p32_new = nomsg [L232] main__i2 = 0 [L234] COND FALSE !(!(mode1 == 0)) [L240] COND TRUE ((int)r1) < 2 [L242] COND FALSE !(!(ep12 == 0)) [L253] COND TRUE !(ep13 == 0) [L255] int node1____CPAchecker_TMP_1; [L256] COND TRUE max1 != nomsg [L258] COND TRUE p13_new == nomsg [L260] node1____CPAchecker_TMP_1 = max1 [L262] p13_new = node1____CPAchecker_TMP_1 [L264] mode1 = 1 [L266] COND FALSE !(!(mode2 == 0)) [L272] COND TRUE ((int)r2) < 2 [L274] COND TRUE !(ep21 == 0) [L276] int node2____CPAchecker_TMP_0; [L277] COND TRUE max2 != nomsg [L279] COND TRUE p21_new == nomsg [L281] node2____CPAchecker_TMP_0 = max2 [L283] p21_new = node2____CPAchecker_TMP_0 [L285] COND FALSE !(!(ep23 == 0)) [L296] mode2 = 1 [L298] COND FALSE !(!(mode3 == 0)) [L304] COND TRUE ((int)r3) < 2 [L306] COND FALSE !(!(ep31 == 0)) [L317] COND TRUE !(ep32 == 0) [L319] int node3____CPAchecker_TMP_1; [L320] COND TRUE max3 != nomsg [L322] COND TRUE p32_new == nomsg [L324] node3____CPAchecker_TMP_1 = max3 [L326] p32_new = node3____CPAchecker_TMP_1 [L328] mode3 = 1 [L329] p12_old = p12_new [L330] p12_new = nomsg [L331] p13_old = p13_new [L332] p13_new = nomsg [L333] p21_old = p21_new [L334] p21_new = nomsg [L335] p23_old = p23_new [L336] p23_new = nomsg [L337] p31_old = p31_new [L338] p31_new = nomsg [L339] p32_old = p32_new [L340] p32_new = nomsg [L342] int check__tmp; [L343] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L345] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L347] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L349] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L351] COND FALSE !(((int)r1) >= 2) [L357] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L359] COND TRUE ((int)r1) < 2 [L361] COND FALSE !(((int)r1) >= 2) [L367] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L369] COND TRUE ((int)r1) < 2 [L371] check__tmp = 1 [L372] __return_1270 = check__tmp [L373] main__c1 = __return_1270 [L375] _Bool __tmp_1; [L376] __tmp_1 = main__c1 [L377] _Bool assert__arg; [L378] assert__arg = __tmp_1 [L379] COND FALSE !(assert__arg == 0) [L386] COND TRUE !(mode1 == 0) [L388] COND FALSE !(r1 == 255) [L394] r1 = r1 + 1 [L395] COND TRUE !(ep21 == 0) [L397] m1 = p21_old [L398] p21_old = nomsg [L399] COND FALSE !(((int)m1) > ((int)max1)) [L403] COND FALSE !(!(ep31 == 0)) [L411] COND TRUE ((int)r1) == 1 [L413] COND TRUE ((int)max1) == ((int)id1) [L415] st1 = 1 [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] COND FALSE !(r2 == 255) [L426] r2 = r2 + 1 [L427] COND FALSE !(!(ep12 == 0)) [L435] COND TRUE !(ep32 == 0) [L437] m2 = p32_old [L438] p32_old = nomsg [L439] COND FALSE !(((int)m2) > ((int)max2)) [L443] COND FALSE !(((int)r2) == 2) [L449] mode2 = 0 [L451] COND TRUE !(mode3 == 0) [L453] COND FALSE !(r3 == 255) [L459] r3 = r3 + 1 [L460] COND TRUE !(ep13 == 0) [L462] m3 = p13_old [L463] p13_old = nomsg [L464] COND TRUE ((int)m3) > ((int)max3) [L466] max3 = m3 [L468] COND FALSE !(!(ep23 == 0)) [L476] COND FALSE !(((int)r3) == 2) [L482] mode3 = 0 [L483] p12_old = p12_new [L484] p12_new = nomsg [L485] p13_old = p13_new [L486] p13_new = nomsg [L487] p21_old = p21_new [L488] p21_new = nomsg [L489] p23_old = p23_new [L490] p23_new = nomsg [L491] p31_old = p31_new [L492] p31_new = nomsg [L493] p32_old = p32_new [L494] p32_new = nomsg [L496] int check__tmp; [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L499] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L501] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L503] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L517] check__tmp = 0 [L518] __return_1696 = check__tmp [L519] main__c1 = __return_1696 [L521] _Bool __tmp_2; [L522] __tmp_2 = main__c1 [L523] _Bool assert__arg; [L524] assert__arg = __tmp_2 [L525] COND TRUE assert__arg == 0 [L527] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 125.6s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8683 SDtfs, 8765 SDslu, 12564 SDs, 0 SdLazy, 11986 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6515occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 9912 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 82.7s InterpolantComputationTime, 1885 NumberOfCodeBlocks, 1885 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1754 ConstructedInterpolants, 0 QuantifiedInterpolants, 1245435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...