/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:36:44,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:36:44,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:36:44,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:36:44,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:36:44,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:36:44,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:36:44,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:36:44,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:36:44,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:36:44,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:36:44,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:36:44,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:36:44,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:36:44,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:36:44,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:36:44,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:36:44,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:36:44,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:36:44,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:36:44,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:36:44,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:36:44,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:36:44,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:36:44,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:36:44,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:36:44,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:36:44,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:36:44,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:36:44,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:36:44,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:36:44,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:36:44,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:36:44,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:36:44,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:36:44,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:36:44,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:36:44,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:36:44,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:36:44,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:36:44,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:36:44,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:36:44,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:36:44,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:36:44,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:36:44,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:36:44,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:36:44,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:36:44,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:36:44,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:36:44,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:36:44,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:36:44,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:36:44,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:36:44,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:36:44,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:36:44,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:36:44,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:36:44,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:36:44,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:36:44,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:36:44,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:36:44,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:36:44,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:36:44,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:36:44,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:36:44,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:36:44,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:36:44,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:36:44,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:36:44,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:36:44,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:36:44,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:36:44,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d5df9525/dc929bb5a3af45a59efbb55341a1d193/FLAG902a70514 [2020-10-14 09:36:45,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:36:45,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:36:45,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d5df9525/dc929bb5a3af45a59efbb55341a1d193/FLAG902a70514 [2020-10-14 09:36:45,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d5df9525/dc929bb5a3af45a59efbb55341a1d193 [2020-10-14 09:36:45,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:36:45,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:36:45,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:36:45,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:36:45,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:36:45,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:45" (1/1) ... [2020-10-14 09:36:45,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:45, skipping insertion in model container [2020-10-14 09:36:45,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:45" (1/1) ... [2020-10-14 09:36:45,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:36:45,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:36:46,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:36:46,048 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:36:46,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:36:46,209 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:36:46,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46 WrapperNode [2020-10-14 09:36:46,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:36:46,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:36:46,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:36:46,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:36:46,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... [2020-10-14 09:36:46,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:36:46,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:36:46,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:36:46,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:36:46,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:36:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:36:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:36:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:36:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:36:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:36:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:36:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:36:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:36:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:36:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:36:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:36:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:36:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:36:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:36:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:36:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:36:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:36:47,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:36:47,921 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:36:47,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:36:47 BoogieIcfgContainer [2020-10-14 09:36:47,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:36:47,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:36:47,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:36:47,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:36:47,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:36:45" (1/3) ... [2020-10-14 09:36:47,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:36:47, skipping insertion in model container [2020-10-14 09:36:47,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:46" (2/3) ... [2020-10-14 09:36:47,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e767c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:36:47, skipping insertion in model container [2020-10-14 09:36:47,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:36:47" (3/3) ... [2020-10-14 09:36:47,937 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:36:47,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:36:47,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:36:47,973 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:36:48,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:36:48,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:36:48,000 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:36:48,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:36:48,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:36:48,001 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:36:48,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:36:48,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:36:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-14 09:36:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:36:48,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:48,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:48,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -273306171, now seen corresponding path program 1 times [2020-10-14 09:36:48,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:48,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781710396] [2020-10-14 09:36:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:53,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:36:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:36:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 09:36:53,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:53,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:36:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:36:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:36:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 09:36:54,498 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:36:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:36:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:54,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:36:54,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:36:54,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:36:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:36:54,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:36:54,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:36:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:36:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:36:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:36:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:36:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:36:54,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781710396] [2020-10-14 09:36:54,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:36:54,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:36:54,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97146307] [2020-10-14 09:36:54,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:36:54,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:36:54,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:36:54,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:36:54,642 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 4 states. [2020-10-14 09:36:55,242 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:36:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:36:57,605 INFO L93 Difference]: Finished difference Result 664 states and 1141 transitions. [2020-10-14 09:36:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:36:57,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-14 09:36:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:36:57,626 INFO L225 Difference]: With dead ends: 664 [2020-10-14 09:36:57,626 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 09:36:57,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:36:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 09:36:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 494. [2020-10-14 09:36:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-14 09:36:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 816 transitions. [2020-10-14 09:36:57,716 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 816 transitions. Word has length 122 [2020-10-14 09:36:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:36:57,717 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 816 transitions. [2020-10-14 09:36:57,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:36:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 816 transitions. [2020-10-14 09:36:57,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:36:57,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:36:57,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:36:57,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:36:57,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:36:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:36:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2079566663, now seen corresponding path program 1 times [2020-10-14 09:36:57,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:36:57,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100546770] [2020-10-14 09:36:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:36:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:36:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:36:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:02,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:37:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:37:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 09:37:02,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:02,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:37:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:37:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:03,459 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:03,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:03,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:37:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:03,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:03,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100546770] [2020-10-14 09:37:03,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:03,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:03,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204408796] [2020-10-14 09:37:03,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:03,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:03,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:03,551 INFO L87 Difference]: Start difference. First operand 494 states and 816 transitions. Second operand 4 states. [2020-10-14 09:37:03,949 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:37:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:06,061 INFO L93 Difference]: Finished difference Result 1068 states and 1778 transitions. [2020-10-14 09:37:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:06,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:37:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:06,071 INFO L225 Difference]: With dead ends: 1068 [2020-10-14 09:37:06,071 INFO L226 Difference]: Without dead ends: 771 [2020-10-14 09:37:06,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-14 09:37:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 767. [2020-10-14 09:37:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-14 09:37:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1272 transitions. [2020-10-14 09:37:06,140 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1272 transitions. Word has length 125 [2020-10-14 09:37:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:06,140 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 1272 transitions. [2020-10-14 09:37:06,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1272 transitions. [2020-10-14 09:37:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:37:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:06,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:06,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:37:06,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1421740198, now seen corresponding path program 1 times [2020-10-14 09:37:06,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:06,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059422630] [2020-10-14 09:37:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:11,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:37:11,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:37:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 09:37:11,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:11,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:37:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:37:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:11,744 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:11,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:11,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:11,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:11,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:11,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:37:11,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:11,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:11,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:11,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:11,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:11,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059422630] [2020-10-14 09:37:11,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:11,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:11,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402500445] [2020-10-14 09:37:11,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:11,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:11,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:11,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:11,820 INFO L87 Difference]: Start difference. First operand 767 states and 1272 transitions. Second operand 4 states. [2020-10-14 09:37:12,187 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:37:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:14,063 INFO L93 Difference]: Finished difference Result 1867 states and 3110 transitions. [2020-10-14 09:37:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:14,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 09:37:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:14,075 INFO L225 Difference]: With dead ends: 1867 [2020-10-14 09:37:14,076 INFO L226 Difference]: Without dead ends: 1297 [2020-10-14 09:37:14,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-10-14 09:37:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1291. [2020-10-14 09:37:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-10-14 09:37:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 2142 transitions. [2020-10-14 09:37:14,176 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 2142 transitions. Word has length 128 [2020-10-14 09:37:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:14,177 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 2142 transitions. [2020-10-14 09:37:14,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2142 transitions. [2020-10-14 09:37:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:37:14,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:14,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:14,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:37:14,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:14,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1879036908, now seen corresponding path program 1 times [2020-10-14 09:37:14,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:14,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576169673] [2020-10-14 09:37:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:15,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:19,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:19,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:37:19,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:37:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:37:19,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:19,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 09:37:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:37:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:19,805 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:19,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:37:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:19,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:19,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576169673] [2020-10-14 09:37:19,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:19,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:19,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162953935] [2020-10-14 09:37:19,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:19,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:19,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:19,923 INFO L87 Difference]: Start difference. First operand 1291 states and 2142 transitions. Second operand 4 states. [2020-10-14 09:37:20,627 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:37:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:22,891 INFO L93 Difference]: Finished difference Result 3383 states and 5616 transitions. [2020-10-14 09:37:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:22,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:37:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:22,907 INFO L225 Difference]: With dead ends: 3383 [2020-10-14 09:37:22,907 INFO L226 Difference]: Without dead ends: 2289 [2020-10-14 09:37:22,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-10-14 09:37:23,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2279. [2020-10-14 09:37:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-10-14 09:37:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3734 transitions. [2020-10-14 09:37:23,022 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3734 transitions. Word has length 131 [2020-10-14 09:37:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:23,023 INFO L479 AbstractCegarLoop]: Abstraction has 2279 states and 3734 transitions. [2020-10-14 09:37:23,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3734 transitions. [2020-10-14 09:37:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 09:37:23,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:23,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:23,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:37:23,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1082018501, now seen corresponding path program 1 times [2020-10-14 09:37:23,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:23,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830742516] [2020-10-14 09:37:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 09:37:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:37:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:37:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:28,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:37:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:37:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 09:37:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:28,642 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:28,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:28,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:28,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:28,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:37:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:28,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:28,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830742516] [2020-10-14 09:37:28,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:28,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:37:28,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60802791] [2020-10-14 09:37:28,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:37:28,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:28,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:37:28,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:28,835 INFO L87 Difference]: Start difference. First operand 2279 states and 3734 transitions. Second operand 5 states. [2020-10-14 09:37:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:31,399 INFO L93 Difference]: Finished difference Result 6653 states and 10890 transitions. [2020-10-14 09:37:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:31,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 09:37:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:31,427 INFO L225 Difference]: With dead ends: 6653 [2020-10-14 09:37:31,427 INFO L226 Difference]: Without dead ends: 4439 [2020-10-14 09:37:31,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:37:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2020-10-14 09:37:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4437. [2020-10-14 09:37:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4437 states. [2020-10-14 09:37:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 7243 transitions. [2020-10-14 09:37:31,747 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 7243 transitions. Word has length 134 [2020-10-14 09:37:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:31,748 INFO L479 AbstractCegarLoop]: Abstraction has 4437 states and 7243 transitions. [2020-10-14 09:37:31,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:37:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 7243 transitions. [2020-10-14 09:37:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:37:31,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:31,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:31,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:37:31,756 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash -139369565, now seen corresponding path program 1 times [2020-10-14 09:37:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:31,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996654524] [2020-10-14 09:37:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:36,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:36,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:37:36,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:37:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:37:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:37,202 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:37:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:37,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:37,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996654524] [2020-10-14 09:37:37,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:37,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891454971] [2020-10-14 09:37:37,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:37,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:37,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:37,267 INFO L87 Difference]: Start difference. First operand 4437 states and 7243 transitions. Second operand 4 states. [2020-10-14 09:37:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:39,448 INFO L93 Difference]: Finished difference Result 10429 states and 17089 transitions. [2020-10-14 09:37:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:39,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 09:37:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:39,479 INFO L225 Difference]: With dead ends: 10429 [2020-10-14 09:37:39,479 INFO L226 Difference]: Without dead ends: 6355 [2020-10-14 09:37:39,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2020-10-14 09:37:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6209. [2020-10-14 09:37:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6209 states. [2020-10-14 09:37:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 10087 transitions. [2020-10-14 09:37:39,845 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 10087 transitions. Word has length 135 [2020-10-14 09:37:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:39,846 INFO L479 AbstractCegarLoop]: Abstraction has 6209 states and 10087 transitions. [2020-10-14 09:37:39,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 10087 transitions. [2020-10-14 09:37:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:37:39,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:39,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:39,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:37:39,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:39,851 INFO L82 PathProgramCache]: Analyzing trace with hash -549116253, now seen corresponding path program 1 times [2020-10-14 09:37:39,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:39,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745191621] [2020-10-14 09:37:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:44,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:44,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:37:44,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:37:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:37:44,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:44,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:44,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:37:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 09:37:44,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:45,278 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:37:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:45,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745191621] [2020-10-14 09:37:45,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:45,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:45,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149015222] [2020-10-14 09:37:45,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:45,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:45,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:45,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:45,350 INFO L87 Difference]: Start difference. First operand 6209 states and 10087 transitions. Second operand 4 states. [2020-10-14 09:37:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:48,906 INFO L93 Difference]: Finished difference Result 18203 states and 29545 transitions. [2020-10-14 09:37:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:48,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:37:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:48,963 INFO L225 Difference]: With dead ends: 18203 [2020-10-14 09:37:48,963 INFO L226 Difference]: Without dead ends: 12089 [2020-10-14 09:37:48,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2020-10-14 09:37:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 12087. [2020-10-14 09:37:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12087 states. [2020-10-14 09:37:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12087 states to 12087 states and 19548 transitions. [2020-10-14 09:37:49,618 INFO L78 Accepts]: Start accepts. Automaton has 12087 states and 19548 transitions. Word has length 136 [2020-10-14 09:37:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:49,619 INFO L479 AbstractCegarLoop]: Abstraction has 12087 states and 19548 transitions. [2020-10-14 09:37:49,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12087 states and 19548 transitions. [2020-10-14 09:37:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:37:49,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:49,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:49,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:37:49,626 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash 90709096, now seen corresponding path program 1 times [2020-10-14 09:37:49,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:49,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947495251] [2020-10-14 09:37:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:54,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:37:54,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:37:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:37:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:55,051 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:37:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:55,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:37:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:55,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947495251] [2020-10-14 09:37:55,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:55,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:55,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085781311] [2020-10-14 09:37:55,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:55,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:55,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:55,091 INFO L87 Difference]: Start difference. First operand 12087 states and 19548 transitions. Second operand 4 states. [2020-10-14 09:37:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:59,145 INFO L93 Difference]: Finished difference Result 36073 states and 58306 transitions. [2020-10-14 09:37:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:37:59,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:37:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:59,204 INFO L225 Difference]: With dead ends: 36073 [2020-10-14 09:37:59,205 INFO L226 Difference]: Without dead ends: 24082 [2020-10-14 09:37:59,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24082 states. [2020-10-14 09:37:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24082 to 12104. [2020-10-14 09:37:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12104 states. [2020-10-14 09:37:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 19570 transitions. [2020-10-14 09:37:59,951 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 19570 transitions. Word has length 136 [2020-10-14 09:37:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:59,951 INFO L479 AbstractCegarLoop]: Abstraction has 12104 states and 19570 transitions. [2020-10-14 09:37:59,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 19570 transitions. [2020-10-14 09:37:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:37:59,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:59,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:59,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:37:59,960 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash 776956367, now seen corresponding path program 1 times [2020-10-14 09:37:59,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:59,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372375] [2020-10-14 09:37:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:05,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 09:38:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:38:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:05,390 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:05,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:38:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:05,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:05,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372375] [2020-10-14 09:38:05,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:05,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:05,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659995093] [2020-10-14 09:38:05,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:05,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:05,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:05,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:05,434 INFO L87 Difference]: Start difference. First operand 12104 states and 19570 transitions. Second operand 4 states. [2020-10-14 09:38:05,829 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:38:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:08,400 INFO L93 Difference]: Finished difference Result 23372 states and 37928 transitions. [2020-10-14 09:38:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:08,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:38:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:08,441 INFO L225 Difference]: With dead ends: 23372 [2020-10-14 09:38:08,442 INFO L226 Difference]: Without dead ends: 15738 [2020-10-14 09:38:08,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15738 states. [2020-10-14 09:38:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15738 to 15736. [2020-10-14 09:38:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15736 states. [2020-10-14 09:38:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 25430 transitions. [2020-10-14 09:38:09,095 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 25430 transitions. Word has length 137 [2020-10-14 09:38:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:09,095 INFO L479 AbstractCegarLoop]: Abstraction has 15736 states and 25430 transitions. [2020-10-14 09:38:09,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 25430 transitions. [2020-10-14 09:38:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:38:09,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:09,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:09,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:38:09,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash -176419170, now seen corresponding path program 1 times [2020-10-14 09:38:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:09,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008640500] [2020-10-14 09:38:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:14,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:14,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 09:38:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:38:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:14,534 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:14,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:38:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:14,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:14,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008640500] [2020-10-14 09:38:14,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:14,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:14,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159860180] [2020-10-14 09:38:14,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:14,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:14,588 INFO L87 Difference]: Start difference. First operand 15736 states and 25430 transitions. Second operand 4 states. [2020-10-14 09:38:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:17,427 INFO L93 Difference]: Finished difference Result 37316 states and 60560 transitions. [2020-10-14 09:38:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:17,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:38:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:17,481 INFO L225 Difference]: With dead ends: 37316 [2020-10-14 09:38:17,481 INFO L226 Difference]: Without dead ends: 22578 [2020-10-14 09:38:17,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22578 states. [2020-10-14 09:38:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22578 to 22000. [2020-10-14 09:38:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22000 states. [2020-10-14 09:38:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22000 states to 22000 states and 35322 transitions. [2020-10-14 09:38:18,407 INFO L78 Accepts]: Start accepts. Automaton has 22000 states and 35322 transitions. Word has length 137 [2020-10-14 09:38:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:18,407 INFO L479 AbstractCegarLoop]: Abstraction has 22000 states and 35322 transitions. [2020-10-14 09:38:18,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 22000 states and 35322 transitions. [2020-10-14 09:38:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:38:18,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:18,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:18,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:38:18,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:18,412 INFO L82 PathProgramCache]: Analyzing trace with hash -444086342, now seen corresponding path program 1 times [2020-10-14 09:38:18,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:18,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426718404] [2020-10-14 09:38:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:38:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:38:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:23,845 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:23,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:23,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:23,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:38:23,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:23,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:23,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426718404] [2020-10-14 09:38:23,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:23,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:23,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472008939] [2020-10-14 09:38:23,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:23,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:23,885 INFO L87 Difference]: Start difference. First operand 22000 states and 35322 transitions. Second operand 4 states. [2020-10-14 09:38:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:28,773 INFO L93 Difference]: Finished difference Result 65799 states and 105616 transitions. [2020-10-14 09:38:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:28,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:38:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:28,873 INFO L225 Difference]: With dead ends: 65799 [2020-10-14 09:38:28,873 INFO L226 Difference]: Without dead ends: 43908 [2020-10-14 09:38:28,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43908 states. [2020-10-14 09:38:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43908 to 22034. [2020-10-14 09:38:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22034 states. [2020-10-14 09:38:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22034 states to 22034 states and 35370 transitions. [2020-10-14 09:38:30,290 INFO L78 Accepts]: Start accepts. Automaton has 22034 states and 35370 transitions. Word has length 137 [2020-10-14 09:38:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:30,290 INFO L479 AbstractCegarLoop]: Abstraction has 22034 states and 35370 transitions. [2020-10-14 09:38:30,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22034 states and 35370 transitions. [2020-10-14 09:38:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:38:30,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:30,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:30,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:38:30,296 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1919908710, now seen corresponding path program 1 times [2020-10-14 09:38:30,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:30,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232644097] [2020-10-14 09:38:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:35,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:38:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 09:38:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:35,766 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:35,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:35,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:35,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:35,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:38:35,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:35,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:38:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:35,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232644097] [2020-10-14 09:38:35,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:35,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:38:35,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174988343] [2020-10-14 09:38:35,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:38:35,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:38:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:38:35,852 INFO L87 Difference]: Start difference. First operand 22034 states and 35370 transitions. Second operand 6 states. [2020-10-14 09:38:36,219 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-14 09:38:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:39,821 INFO L93 Difference]: Finished difference Result 58278 states and 93780 transitions. [2020-10-14 09:38:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:38:39,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 09:38:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:39,881 INFO L225 Difference]: With dead ends: 58278 [2020-10-14 09:38:39,881 INFO L226 Difference]: Without dead ends: 37372 [2020-10-14 09:38:39,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:38:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37372 states. [2020-10-14 09:38:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37372 to 37370. [2020-10-14 09:38:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37370 states. [2020-10-14 09:38:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37370 states to 37370 states and 59898 transitions. [2020-10-14 09:38:43,039 INFO L78 Accepts]: Start accepts. Automaton has 37370 states and 59898 transitions. Word has length 138 [2020-10-14 09:38:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:43,039 INFO L479 AbstractCegarLoop]: Abstraction has 37370 states and 59898 transitions. [2020-10-14 09:38:43,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:38:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 37370 states and 59898 transitions. [2020-10-14 09:38:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:38:43,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:43,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:43,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:38:43,043 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash -416443713, now seen corresponding path program 1 times [2020-10-14 09:38:43,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:43,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449409857] [2020-10-14 09:38:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:48,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:38:48,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:38:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:38:48,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:38:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:38:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 09:38:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:48,510 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:38:48,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:48,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449409857] [2020-10-14 09:38:48,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:48,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:38:48,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026539915] [2020-10-14 09:38:48,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:38:48,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:38:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:48,577 INFO L87 Difference]: Start difference. First operand 37370 states and 59898 transitions. Second operand 5 states. [2020-10-14 09:38:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:55,167 INFO L93 Difference]: Finished difference Result 110484 states and 177201 transitions. [2020-10-14 09:38:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:55,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 09:38:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:55,258 INFO L225 Difference]: With dead ends: 110484 [2020-10-14 09:38:55,258 INFO L226 Difference]: Without dead ends: 73274 [2020-10-14 09:38:55,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:38:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73274 states. [2020-10-14 09:39:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73274 to 73272. [2020-10-14 09:39:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73272 states. [2020-10-14 09:39:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73272 states to 73272 states and 117043 transitions. [2020-10-14 09:39:01,219 INFO L78 Accepts]: Start accepts. Automaton has 73272 states and 117043 transitions. Word has length 138 [2020-10-14 09:39:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 73272 states and 117043 transitions. [2020-10-14 09:39:01,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:39:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 73272 states and 117043 transitions. [2020-10-14 09:39:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 09:39:01,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:01,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:01,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:39:01,228 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2044040378, now seen corresponding path program 1 times [2020-10-14 09:39:01,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:01,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026608958] [2020-10-14 09:39:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:06,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:06,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 09:39:06,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:39:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:39:06,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:06,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 09:39:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:39:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:06,668 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:39:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:06,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026608958] [2020-10-14 09:39:06,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:06,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:06,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037092093] [2020-10-14 09:39:06,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:06,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:06,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:06,705 INFO L87 Difference]: Start difference. First operand 73272 states and 117043 transitions. Second operand 4 states. [2020-10-14 09:39:07,103 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:39:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:15,159 INFO L93 Difference]: Finished difference Result 140772 states and 225821 transitions. [2020-10-14 09:39:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:39:15,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 09:39:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:15,278 INFO L225 Difference]: With dead ends: 140772 [2020-10-14 09:39:15,279 INFO L226 Difference]: Without dead ends: 93010 [2020-10-14 09:39:15,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93010 states. [2020-10-14 09:39:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93010 to 93008. [2020-10-14 09:39:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93008 states. [2020-10-14 09:39:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93008 states to 93008 states and 148603 transitions. [2020-10-14 09:39:23,619 INFO L78 Accepts]: Start accepts. Automaton has 93008 states and 148603 transitions. Word has length 139 [2020-10-14 09:39:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:23,619 INFO L479 AbstractCegarLoop]: Abstraction has 93008 states and 148603 transitions. [2020-10-14 09:39:23,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 93008 states and 148603 transitions. [2020-10-14 09:39:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:39:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:23,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:23,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:39:23,624 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1446787030, now seen corresponding path program 1 times [2020-10-14 09:39:23,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:23,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273567292] [2020-10-14 09:39:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:39:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 09:39:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:29,103 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:39:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:29,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:29,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273567292] [2020-10-14 09:39:29,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:29,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:29,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548262107] [2020-10-14 09:39:29,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:29,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:29,154 INFO L87 Difference]: Start difference. First operand 93008 states and 148603 transitions. Second operand 4 states. [2020-10-14 09:39:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:44,261 INFO L93 Difference]: Finished difference Result 273486 states and 436699 transitions. [2020-10-14 09:39:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:44,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-14 09:39:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:44,535 INFO L225 Difference]: With dead ends: 273486 [2020-10-14 09:39:44,535 INFO L226 Difference]: Without dead ends: 180968 [2020-10-14 09:39:44,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180968 states. [2020-10-14 09:40:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180968 to 180962. [2020-10-14 09:40:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180962 states. [2020-10-14 09:40:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180962 states to 180962 states and 287555 transitions. [2020-10-14 09:40:00,351 INFO L78 Accepts]: Start accepts. Automaton has 180962 states and 287555 transitions. Word has length 140 [2020-10-14 09:40:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:00,352 INFO L479 AbstractCegarLoop]: Abstraction has 180962 states and 287555 transitions. [2020-10-14 09:40:00,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 180962 states and 287555 transitions. [2020-10-14 09:40:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:40:00,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:00,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:00,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:40:00,359 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:00,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:00,360 INFO L82 PathProgramCache]: Analyzing trace with hash 977704495, now seen corresponding path program 1 times [2020-10-14 09:40:00,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:00,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2781038] [2020-10-14 09:40:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:40:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:05,871 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:40:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:05,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2781038] [2020-10-14 09:40:05,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:05,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:05,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024381721] [2020-10-14 09:40:05,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:05,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:05,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:05,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:05,907 INFO L87 Difference]: Start difference. First operand 180962 states and 287555 transitions. Second operand 4 states.