/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:07:22,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:07:22,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:07:23,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:07:23,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:07:23,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:07:23,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:07:23,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:07:23,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:07:23,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:07:23,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:07:23,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:07:23,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:07:23,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:07:23,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:07:23,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:07:23,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:07:23,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:07:23,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:07:23,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:07:23,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:07:23,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:07:23,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:07:23,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:07:23,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:07:23,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:07:23,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:07:23,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:07:23,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:07:23,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:07:23,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:07:23,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:07:23,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:07:23,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:07:23,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:07:23,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:07:23,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:07:23,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:07:23,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:07:23,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:07:23,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:07:23,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:07:23,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:07:23,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:07:23,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:07:23,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:07:23,199 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:07:23,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:07:23,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:07:23,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:07:23,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:07:23,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:07:23,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:07:23,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:07:23,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:07:23,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:07:23,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:07:23,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:07:23,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:07:23,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:07:23,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:07:23,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:07:23,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:07:23,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:07:23,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:07:23,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:07:23,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:07:23,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:07:23,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:07:23,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:07:23,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:07:23,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:07:23,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:07:23,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:07:23,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:07:23,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:07:23,591 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:07:23,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:07:23,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ce254f5/f78d48fb37354eac815b94c2b42976e3/FLAG7add32704 [2020-10-15 03:07:24,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:07:24,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:07:24,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ce254f5/f78d48fb37354eac815b94c2b42976e3/FLAG7add32704 [2020-10-15 03:07:24,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ce254f5/f78d48fb37354eac815b94c2b42976e3 [2020-10-15 03:07:24,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:07:24,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:07:24,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:24,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:07:24,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:07:24,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:24" (1/1) ... [2020-10-15 03:07:24,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457589d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:24, skipping insertion in model container [2020-10-15 03:07:24,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:24" (1/1) ... [2020-10-15 03:07:24,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:07:24,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:07:25,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:25,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:07:25,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:25,515 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:07:25,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25 WrapperNode [2020-10-15 03:07:25,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:25,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:07:25,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:07:25,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:07:25,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... [2020-10-15 03:07:25,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:07:25,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:07:25,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:07:25,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:07:25,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:07:25,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:07:25,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:07:25,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:07:25,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:07:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:07:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:07:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:07:25,777 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:07:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:07:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:07:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:07:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:07:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:07:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:07:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:07:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:07:27,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:07:27,302 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:07:27,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:27 BoogieIcfgContainer [2020-10-15 03:07:27,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:07:27,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:07:27,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:07:27,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:07:27,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:24" (1/3) ... [2020-10-15 03:07:27,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63457400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:27, skipping insertion in model container [2020-10-15 03:07:27,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:25" (2/3) ... [2020-10-15 03:07:27,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63457400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:27, skipping insertion in model container [2020-10-15 03:07:27,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:27" (3/3) ... [2020-10-15 03:07:27,324 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:07:27,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:07:27,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:07:27,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:07:27,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:07:27,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:07:27,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:07:27,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:07:27,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:07:27,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:07:27,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:07:27,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:07:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-15 03:07:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:07:27,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:27,502 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] [2020-10-15 03:07:27,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-15 03:07:27,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:27,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894658594] [2020-10-15 03:07:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:33,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:07:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:07:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-15 03:07:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:33,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:07:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 03:07:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:07:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:07:34,238 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:34,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:34,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:07:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:34,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:34,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:34,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:34,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894658594] [2020-10-15 03:07:34,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:34,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:07:34,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394182477] [2020-10-15 03:07:34,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:07:34,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:34,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:07:34,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:34,438 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 4 states. [2020-10-15 03:07:34,979 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:07:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:37,475 INFO L93 Difference]: Finished difference Result 575 states and 998 transitions. [2020-10-15 03:07:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:37,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-15 03:07:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:37,503 INFO L225 Difference]: With dead ends: 575 [2020-10-15 03:07:37,506 INFO L226 Difference]: Without dead ends: 436 [2020-10-15 03:07:37,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-15 03:07:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2020-10-15 03:07:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-15 03:07:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 718 transitions. [2020-10-15 03:07:37,646 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 718 transitions. Word has length 115 [2020-10-15 03:07:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:37,647 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 718 transitions. [2020-10-15 03:07:37,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:07:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 718 transitions. [2020-10-15 03:07:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:07:37,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:37,651 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] [2020-10-15 03:07:37,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:07:37,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2018894768, now seen corresponding path program 1 times [2020-10-15 03:07:37,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:37,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842524538] [2020-10-15 03:07:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:42,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:42,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:07:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 03:07:42,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:42,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 03:07:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:43,611 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:07:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:43,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:43,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842524538] [2020-10-15 03:07:43,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:43,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:43,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870961343] [2020-10-15 03:07:43,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:43,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:43,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:43,696 INFO L87 Difference]: Start difference. First operand 434 states and 718 transitions. Second operand 5 states. [2020-10-15 03:07:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:46,343 INFO L93 Difference]: Finished difference Result 1228 states and 2029 transitions. [2020-10-15 03:07:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:46,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:07:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:46,355 INFO L225 Difference]: With dead ends: 1228 [2020-10-15 03:07:46,355 INFO L226 Difference]: Without dead ends: 845 [2020-10-15 03:07:46,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-15 03:07:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2020-10-15 03:07:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-15 03:07:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1391 transitions. [2020-10-15 03:07:46,473 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1391 transitions. Word has length 118 [2020-10-15 03:07:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:46,476 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1391 transitions. [2020-10-15 03:07:46,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1391 transitions. [2020-10-15 03:07:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:07:46,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:46,482 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] [2020-10-15 03:07:46,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:07:46,482 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:46,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1515359262, now seen corresponding path program 1 times [2020-10-15 03:07:46,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:46,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282238313] [2020-10-15 03:07:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:51,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:51,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:07:51,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:07:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:07:51,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 03:07:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:52,525 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:52,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:52,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:07:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:52,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282238313] [2020-10-15 03:07:52,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:52,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:52,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908259223] [2020-10-15 03:07:52,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:52,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:52,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:52,633 INFO L87 Difference]: Start difference. First operand 843 states and 1391 transitions. Second operand 5 states. [2020-10-15 03:07:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:56,350 INFO L93 Difference]: Finished difference Result 2371 states and 3896 transitions. [2020-10-15 03:07:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:56,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:07:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:56,367 INFO L225 Difference]: With dead ends: 2371 [2020-10-15 03:07:56,367 INFO L226 Difference]: Without dead ends: 1609 [2020-10-15 03:07:56,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2020-10-15 03:07:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1607. [2020-10-15 03:07:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2020-10-15 03:07:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2630 transitions. [2020-10-15 03:07:56,510 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2630 transitions. Word has length 118 [2020-10-15 03:07:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:56,512 INFO L479 AbstractCegarLoop]: Abstraction has 1607 states and 2630 transitions. [2020-10-15 03:07:56,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2630 transitions. [2020-10-15 03:07:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:07:56,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:56,521 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] [2020-10-15 03:07:56,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:07:56,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:56,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2026147503, now seen corresponding path program 1 times [2020-10-15 03:07:56,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:56,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055650227] [2020-10-15 03:07:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:01,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:01,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:08:01,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:01,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 03:08:01,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:01,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 03:08:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:02,137 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:02,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:08:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:02,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:02,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:08:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:02,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055650227] [2020-10-15 03:08:02,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:02,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:02,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212443032] [2020-10-15 03:08:02,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:02,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:02,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:02,264 INFO L87 Difference]: Start difference. First operand 1607 states and 2630 transitions. Second operand 5 states. [2020-10-15 03:08:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:05,102 INFO L93 Difference]: Finished difference Result 4575 states and 7462 transitions. [2020-10-15 03:08:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:05,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:08:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:05,121 INFO L225 Difference]: With dead ends: 4575 [2020-10-15 03:08:05,122 INFO L226 Difference]: Without dead ends: 3077 [2020-10-15 03:08:05,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2020-10-15 03:08:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3075. [2020-10-15 03:08:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2020-10-15 03:08:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4991 transitions. [2020-10-15 03:08:05,330 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4991 transitions. Word has length 119 [2020-10-15 03:08:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:05,331 INFO L479 AbstractCegarLoop]: Abstraction has 3075 states and 4991 transitions. [2020-10-15 03:08:05,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4991 transitions. [2020-10-15 03:08:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:08:05,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:05,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:05,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:08:05,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:05,340 INFO L82 PathProgramCache]: Analyzing trace with hash 608032776, now seen corresponding path program 1 times [2020-10-15 03:08:05,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:05,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271142790] [2020-10-15 03:08:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:10,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:08:10,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:08:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:10,865 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:10,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271142790] [2020-10-15 03:08:10,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:10,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:10,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649386641] [2020-10-15 03:08:10,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:10,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:10,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:10,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:10,941 INFO L87 Difference]: Start difference. First operand 3075 states and 4991 transitions. Second operand 5 states. [2020-10-15 03:08:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:14,320 INFO L93 Difference]: Finished difference Result 8991 states and 14575 transitions. [2020-10-15 03:08:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:14,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:08:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:14,359 INFO L225 Difference]: With dead ends: 8991 [2020-10-15 03:08:14,359 INFO L226 Difference]: Without dead ends: 6009 [2020-10-15 03:08:14,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6009 states. [2020-10-15 03:08:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6009 to 6007. [2020-10-15 03:08:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6007 states. [2020-10-15 03:08:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 9691 transitions. [2020-10-15 03:08:14,758 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 9691 transitions. Word has length 120 [2020-10-15 03:08:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:14,759 INFO L479 AbstractCegarLoop]: Abstraction has 6007 states and 9691 transitions. [2020-10-15 03:08:14,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 9691 transitions. [2020-10-15 03:08:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:08:14,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:14,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:14,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:08:14,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:14,775 INFO L82 PathProgramCache]: Analyzing trace with hash 612389857, now seen corresponding path program 1 times [2020-10-15 03:08:14,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:14,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65516249] [2020-10-15 03:08:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:15,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:08:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:08:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 03:08:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:08:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:20,382 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:20,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:20,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:20,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:20,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:20,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65516249] [2020-10-15 03:08:20,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:20,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523351322] [2020-10-15 03:08:20,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:20,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:20,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:20,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:20,467 INFO L87 Difference]: Start difference. First operand 6007 states and 9691 transitions. Second operand 5 states. [2020-10-15 03:08:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:23,017 INFO L93 Difference]: Finished difference Result 17797 states and 28704 transitions. [2020-10-15 03:08:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:23,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:08:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:23,073 INFO L225 Difference]: With dead ends: 17797 [2020-10-15 03:08:23,073 INFO L226 Difference]: Without dead ends: 11806 [2020-10-15 03:08:23,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11806 states. [2020-10-15 03:08:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11806 to 11804. [2020-10-15 03:08:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11804 states. [2020-10-15 03:08:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11804 states to 11804 states and 18923 transitions. [2020-10-15 03:08:24,051 INFO L78 Accepts]: Start accepts. Automaton has 11804 states and 18923 transitions. Word has length 120 [2020-10-15 03:08:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:24,052 INFO L479 AbstractCegarLoop]: Abstraction has 11804 states and 18923 transitions. [2020-10-15 03:08:24,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 11804 states and 18923 transitions. [2020-10-15 03:08:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:08:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:24,080 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] [2020-10-15 03:08:24,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:08:24,080 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:24,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1546248789, now seen corresponding path program 1 times [2020-10-15 03:08:24,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:24,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999683607] [2020-10-15 03:08:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:08:29,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:08:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:29,760 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 03:08:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:08:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:29,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999683607] [2020-10-15 03:08:29,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:29,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:08:29,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655295334] [2020-10-15 03:08:29,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:08:29,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:08:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:08:29,900 INFO L87 Difference]: Start difference. First operand 11804 states and 18923 transitions. Second operand 8 states. [2020-10-15 03:08:30,385 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-15 03:08:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:34,450 INFO L93 Difference]: Finished difference Result 26656 states and 43585 transitions. [2020-10-15 03:08:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:08:34,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-15 03:08:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:34,527 INFO L225 Difference]: With dead ends: 26656 [2020-10-15 03:08:34,527 INFO L226 Difference]: Without dead ends: 19758 [2020-10-15 03:08:34,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:08:34,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19758 states. [2020-10-15 03:08:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19758 to 11964. [2020-10-15 03:08:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11964 states. [2020-10-15 03:08:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11964 states to 11964 states and 19035 transitions. [2020-10-15 03:08:35,541 INFO L78 Accepts]: Start accepts. Automaton has 11964 states and 19035 transitions. Word has length 121 [2020-10-15 03:08:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:35,541 INFO L479 AbstractCegarLoop]: Abstraction has 11964 states and 19035 transitions. [2020-10-15 03:08:35,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:08:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11964 states and 19035 transitions. [2020-10-15 03:08:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:08:35,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:35,567 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] [2020-10-15 03:08:35,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:08:35,567 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash 766106546, now seen corresponding path program 1 times [2020-10-15 03:08:35,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:35,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116819805] [2020-10-15 03:08:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4305 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 03:08:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:08:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:40,344 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:40,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:08:40,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:40,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:40,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116819805] [2020-10-15 03:08:40,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:40,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:08:40,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672152818] [2020-10-15 03:08:40,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:08:40,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:08:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:40,412 INFO L87 Difference]: Start difference. First operand 11964 states and 19035 transitions. Second operand 4 states. [2020-10-15 03:08:40,769 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:08:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:44,266 INFO L93 Difference]: Finished difference Result 25216 states and 40733 transitions. [2020-10-15 03:08:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:44,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-15 03:08:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:44,313 INFO L225 Difference]: With dead ends: 25216 [2020-10-15 03:08:44,314 INFO L226 Difference]: Without dead ends: 18318 [2020-10-15 03:08:44,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18318 states. [2020-10-15 03:08:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18318 to 18316. [2020-10-15 03:08:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18316 states. [2020-10-15 03:08:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18316 states to 18316 states and 29323 transitions. [2020-10-15 03:08:46,408 INFO L78 Accepts]: Start accepts. Automaton has 18316 states and 29323 transitions. Word has length 121 [2020-10-15 03:08:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:46,409 INFO L479 AbstractCegarLoop]: Abstraction has 18316 states and 29323 transitions. [2020-10-15 03:08:46,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:08:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18316 states and 29323 transitions. [2020-10-15 03:08:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:08:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:46,443 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] [2020-10-15 03:08:46,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:08:46,443 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2140246411, now seen corresponding path program 1 times [2020-10-15 03:08:46,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:46,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701232522] [2020-10-15 03:08:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:51,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:08:51,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:08:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:52,075 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:52,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701232522] [2020-10-15 03:08:52,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:52,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:52,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292313282] [2020-10-15 03:08:52,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:52,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:52,167 INFO L87 Difference]: Start difference. First operand 18316 states and 29323 transitions. Second operand 5 states. [2020-10-15 03:08:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:56,791 INFO L93 Difference]: Finished difference Result 53970 states and 86382 transitions. [2020-10-15 03:08:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:56,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:08:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:56,867 INFO L225 Difference]: With dead ends: 53970 [2020-10-15 03:08:56,868 INFO L226 Difference]: Without dead ends: 35746 [2020-10-15 03:08:56,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35746 states. [2020-10-15 03:08:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35746 to 35744. [2020-10-15 03:08:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35744 states. [2020-10-15 03:08:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35744 states to 35744 states and 56824 transitions. [2020-10-15 03:08:59,576 INFO L78 Accepts]: Start accepts. Automaton has 35744 states and 56824 transitions. Word has length 125 [2020-10-15 03:08:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:59,576 INFO L479 AbstractCegarLoop]: Abstraction has 35744 states and 56824 transitions. [2020-10-15 03:08:59,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 35744 states and 56824 transitions. [2020-10-15 03:08:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:08:59,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:59,612 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] [2020-10-15 03:08:59,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:08:59,613 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2100536961, now seen corresponding path program 1 times [2020-10-15 03:08:59,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:59,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389862935] [2020-10-15 03:08:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:04,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:09:04,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:09:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:09:04,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:04,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:09:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:05,425 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:09:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:05,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:05,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:09:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:05,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:05,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389862935] [2020-10-15 03:09:05,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:05,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:05,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747991186] [2020-10-15 03:09:05,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:05,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:05,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:05,521 INFO L87 Difference]: Start difference. First operand 35744 states and 56824 transitions. Second operand 5 states. [2020-10-15 03:09:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:13,577 INFO L93 Difference]: Finished difference Result 105039 states and 167011 transitions. [2020-10-15 03:09:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:13,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:09:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:13,708 INFO L225 Difference]: With dead ends: 105039 [2020-10-15 03:09:13,708 INFO L226 Difference]: Without dead ends: 70237 [2020-10-15 03:09:13,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70237 states. [2020-10-15 03:09:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70237 to 70235. [2020-10-15 03:09:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70235 states. [2020-10-15 03:09:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70235 states to 70235 states and 111145 transitions. [2020-10-15 03:09:21,625 INFO L78 Accepts]: Start accepts. Automaton has 70235 states and 111145 transitions. Word has length 125 [2020-10-15 03:09:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:21,626 INFO L479 AbstractCegarLoop]: Abstraction has 70235 states and 111145 transitions. [2020-10-15 03:09:21,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:09:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 70235 states and 111145 transitions. [2020-10-15 03:09:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:09:21,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:21,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:09:21,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:09:21,671 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -864306737, now seen corresponding path program 1 times [2020-10-15 03:09:21,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:21,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755020935] [2020-10-15 03:09:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:26,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:09:26,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:09:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 03:09:26,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:26,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:09:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:27,393 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:09:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:27,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:09:27,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:27,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:27,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755020935] [2020-10-15 03:09:27,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:27,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:27,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078337905] [2020-10-15 03:09:27,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:27,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:27,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:27,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:27,461 INFO L87 Difference]: Start difference. First operand 70235 states and 111145 transitions. Second operand 5 states. [2020-10-15 03:09:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:42,140 INFO L93 Difference]: Finished difference Result 205573 states and 325302 transitions. [2020-10-15 03:09:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:42,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:09:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:42,421 INFO L225 Difference]: With dead ends: 205573 [2020-10-15 03:09:42,422 INFO L226 Difference]: Without dead ends: 136707 [2020-10-15 03:09:42,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136707 states. [2020-10-15 03:09:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136707 to 136705. [2020-10-15 03:09:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136705 states. [2020-10-15 03:09:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136705 states to 136705 states and 214964 transitions. [2020-10-15 03:09:56,048 INFO L78 Accepts]: Start accepts. Automaton has 136705 states and 214964 transitions. Word has length 126 [2020-10-15 03:09:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:56,049 INFO L479 AbstractCegarLoop]: Abstraction has 136705 states and 214964 transitions. [2020-10-15 03:09:56,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:09:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 136705 states and 214964 transitions. [2020-10-15 03:09:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 03:09:56,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:56,154 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] [2020-10-15 03:09:56,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:09:56,155 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash -695234655, now seen corresponding path program 1 times [2020-10-15 03:09:56,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:56,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543598744] [2020-10-15 03:09:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:01,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 03:10:01,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:10:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:01,816 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:10:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:01,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:01,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:01,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543598744] [2020-10-15 03:10:01,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:01,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:01,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404626421] [2020-10-15 03:10:01,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:01,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:01,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:01,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:01,880 INFO L87 Difference]: Start difference. First operand 136705 states and 214964 transitions. Second operand 5 states. [2020-10-15 03:10:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:29,947 INFO L93 Difference]: Finished difference Result 396743 states and 623402 transitions. [2020-10-15 03:10:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:29,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 03:10:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:30,473 INFO L225 Difference]: With dead ends: 396743 [2020-10-15 03:10:30,474 INFO L226 Difference]: Without dead ends: 267285 [2020-10-15 03:10:30,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:10:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267285 states. [2020-10-15 03:11:05,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267285 to 267283. [2020-10-15 03:11:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267283 states. [2020-10-15 03:11:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267283 states to 267283 states and 417520 transitions. [2020-10-15 03:11:06,573 INFO L78 Accepts]: Start accepts. Automaton has 267283 states and 417520 transitions. Word has length 127 [2020-10-15 03:11:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:06,573 INFO L479 AbstractCegarLoop]: Abstraction has 267283 states and 417520 transitions. [2020-10-15 03:11:06,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 267283 states and 417520 transitions. [2020-10-15 03:11:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 03:11:06,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:06,739 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] [2020-10-15 03:11:06,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:11:06,739 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash -762360530, now seen corresponding path program 1 times [2020-10-15 03:11:06,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:06,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007096381] [2020-10-15 03:11:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking...