/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.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:07:13,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:07:13,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:07:13,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:07:13,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:07:13,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:07:13,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:07:13,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:07:13,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:07:13,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:07:13,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:07:13,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:07:13,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:07:13,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:07:13,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:07:13,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:07:13,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:07:13,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:07:13,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:07:13,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:07:13,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:07:13,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:07:13,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:07:13,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:07:13,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:07:13,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:07:13,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:07:13,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:07:13,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:07:13,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:07:13,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:07:13,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:07:13,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:07:13,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:07:13,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:07:13,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:07:13,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:07:13,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:07:13,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:07:13,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:07:13,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:07:13,415 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 03:07:13,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:07:13,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:07:13,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:07:13,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:07:13,440 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:07:13,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:07:13,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:07:13,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:07:13,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:07:13,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:07:13,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:07:13,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:07:13,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:07:13,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:07:13,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:07:13,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:07:13,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:07:13,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:07:13,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:07:13,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:07:13,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:07:13,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:07:13,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:07:13,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:07:13,444 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 03:07:13,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:07:13,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:07:13,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:07:13,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:07:13,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:07:13,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:07:13,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446835fc1/15de8916cd9e48f696d5bfdc8ef98b56/FLAGaafd15555 [2020-10-15 03:07:14,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:07:14,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:07:14,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446835fc1/15de8916cd9e48f696d5bfdc8ef98b56/FLAGaafd15555 [2020-10-15 03:07:14,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446835fc1/15de8916cd9e48f696d5bfdc8ef98b56 [2020-10-15 03:07:14,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:07:14,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:07:14,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:14,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:07:14,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:07:14,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:14" (1/1) ... [2020-10-15 03:07:14,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373efb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:14, skipping insertion in model container [2020-10-15 03:07:14,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:14" (1/1) ... [2020-10-15 03:07:14,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:07:14,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:07:16,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:16,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:07:16,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:16,867 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:07:16,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16 WrapperNode [2020-10-15 03:07:16,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:16,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:07:16,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:07:16,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:07:16,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:16,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:16,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:16,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:17,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:17,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:17,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (1/1) ... [2020-10-15 03:07:17,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:07:17,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:07:17,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:07:17,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:07:17,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (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 03:07:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:07:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:07:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:07:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:07:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:07:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:07:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:07:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:07:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:07:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:07:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:07:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:07:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:07:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:07:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:07:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:07:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:07:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:07:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:07:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:07:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:07:20,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:07:20,595 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:07:20,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:20 BoogieIcfgContainer [2020-10-15 03:07:20,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:07:20,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:07:20,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:07:20,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:07:20,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:14" (1/3) ... [2020-10-15 03:07:20,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:20, skipping insertion in model container [2020-10-15 03:07:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:16" (2/3) ... [2020-10-15 03:07:20,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:20, skipping insertion in model container [2020-10-15 03:07:20,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:20" (3/3) ... [2020-10-15 03:07:20,620 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:07:20,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:07:20,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 03:07:20,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 03:07:20,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:07:20,691 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:07:20,691 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:07:20,691 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:07:20,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:07:20,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:07:20,692 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:07:20,692 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:07:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states. [2020-10-15 03:07:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-15 03:07:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:20,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:20,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash 146247639, now seen corresponding path program 1 times [2020-10-15 03:07:20,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:20,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599389353] [2020-10-15 03:07:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:26,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-15 03:07:26,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:07:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-15 03:07:26,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:26,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:07:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 03:07:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:07:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:07:27,458 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:07:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:27,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:27,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:27,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:07:27,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:27,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:27,558 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 03:07:27,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599389353] [2020-10-15 03:07:27,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:27,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:07:27,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52171919] [2020-10-15 03:07:27,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:07:27,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:27,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:07:27,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:27,586 INFO L87 Difference]: Start difference. First operand 1078 states. Second operand 4 states. [2020-10-15 03:07:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:36,393 INFO L93 Difference]: Finished difference Result 2418 states and 4194 transitions. [2020-10-15 03:07:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:07:36,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-15 03:07:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:36,428 INFO L225 Difference]: With dead ends: 2418 [2020-10-15 03:07:36,428 INFO L226 Difference]: Without dead ends: 1743 [2020-10-15 03:07:36,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-10-15 03:07:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1685. [2020-10-15 03:07:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1685 states. [2020-10-15 03:07:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2905 transitions. [2020-10-15 03:07:36,601 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2905 transitions. Word has length 160 [2020-10-15 03:07:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:36,602 INFO L479 AbstractCegarLoop]: Abstraction has 1685 states and 2905 transitions. [2020-10-15 03:07:36,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:07:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2905 transitions. [2020-10-15 03:07:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 03:07:36,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:36,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:36,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:07:36,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:36,615 INFO L82 PathProgramCache]: Analyzing trace with hash -506270099, now seen corresponding path program 1 times [2020-10-15 03:07:36,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:36,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906757892] [2020-10-15 03:07:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:41,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 03:07:41,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:07:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:07:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:41,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:07:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:42,318 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:07:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:42,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:42,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:42,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:07:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:42,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:42,434 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 03:07:42,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906757892] [2020-10-15 03:07:42,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:42,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:42,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520471459] [2020-10-15 03:07:42,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:42,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:42,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:42,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:42,440 INFO L87 Difference]: Start difference. First operand 1685 states and 2905 transitions. Second operand 5 states. [2020-10-15 03:07:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:52,474 INFO L93 Difference]: Finished difference Result 4912 states and 8477 transitions. [2020-10-15 03:07:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:52,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-15 03:07:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:52,497 INFO L225 Difference]: With dead ends: 4912 [2020-10-15 03:07:52,497 INFO L226 Difference]: Without dead ends: 3286 [2020-10-15 03:07:52,507 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 03:07:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2020-10-15 03:07:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3282. [2020-10-15 03:07:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3282 states. [2020-10-15 03:07:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 5651 transitions. [2020-10-15 03:07:52,786 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 5651 transitions. Word has length 169 [2020-10-15 03:07:52,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:52,790 INFO L479 AbstractCegarLoop]: Abstraction has 3282 states and 5651 transitions. [2020-10-15 03:07:52,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 5651 transitions. [2020-10-15 03:07:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 03:07:52,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:52,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:52,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:07:52,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:52,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1336155537, now seen corresponding path program 1 times [2020-10-15 03:07:52,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:52,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552782402] [2020-10-15 03:07:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:57,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-15 03:07:57,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:07:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:07:57,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:57,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:07:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:58,660 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:07:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:58,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:58,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:07:58,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:58,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:58,834 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 03:07:58,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552782402] [2020-10-15 03:07:58,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:58,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:58,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841430922] [2020-10-15 03:07:58,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:58,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:58,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:58,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:58,838 INFO L87 Difference]: Start difference. First operand 3282 states and 5651 transitions. Second operand 5 states. [2020-10-15 03:08:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:08,189 INFO L93 Difference]: Finished difference Result 9639 states and 16614 transitions. [2020-10-15 03:08:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:08,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-15 03:08:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:08,227 INFO L225 Difference]: With dead ends: 9639 [2020-10-15 03:08:08,228 INFO L226 Difference]: Without dead ends: 6414 [2020-10-15 03:08:08,237 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 03:08:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2020-10-15 03:08:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 6410. [2020-10-15 03:08:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6410 states. [2020-10-15 03:08:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 11015 transitions. [2020-10-15 03:08:08,693 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 11015 transitions. Word has length 171 [2020-10-15 03:08:08,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:08,696 INFO L479 AbstractCegarLoop]: Abstraction has 6410 states and 11015 transitions. [2020-10-15 03:08:08,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 11015 transitions. [2020-10-15 03:08:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 03:08:08,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:08,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:08,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:08:08,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:08,716 INFO L82 PathProgramCache]: Analyzing trace with hash 526733470, now seen corresponding path program 1 times [2020-10-15 03:08:08,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:08,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685828091] [2020-10-15 03:08:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:13,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:13,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 03:08:13,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:08:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 03:08:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:13,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:08:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:08:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:14,366 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:08:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:08:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:14,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:14,462 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 03:08:14,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685828091] [2020-10-15 03:08:14,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:14,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:08:14,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884500484] [2020-10-15 03:08:14,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:08:14,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:14,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:08:14,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:14,465 INFO L87 Difference]: Start difference. First operand 6410 states and 11015 transitions. Second operand 4 states. [2020-10-15 03:08:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:27,574 INFO L93 Difference]: Finished difference Result 18762 states and 32267 transitions. [2020-10-15 03:08:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:08:27,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-15 03:08:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:27,636 INFO L225 Difference]: With dead ends: 18762 [2020-10-15 03:08:27,636 INFO L226 Difference]: Without dead ends: 12498 [2020-10-15 03:08:27,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12498 states. [2020-10-15 03:08:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12498 to 12494. [2020-10-15 03:08:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12494 states. [2020-10-15 03:08:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12494 states to 12494 states and 21417 transitions. [2020-10-15 03:08:28,388 INFO L78 Accepts]: Start accepts. Automaton has 12494 states and 21417 transitions. Word has length 173 [2020-10-15 03:08:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:28,389 INFO L479 AbstractCegarLoop]: Abstraction has 12494 states and 21417 transitions. [2020-10-15 03:08:28,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:08:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12494 states and 21417 transitions. [2020-10-15 03:08:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 03:08:28,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:28,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:28,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:08:28,427 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2020780244, now seen corresponding path program 1 times [2020-10-15 03:08:28,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:28,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621252041] [2020-10-15 03:08:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 03:08:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:08:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:08:33,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:33,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:08:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:34,310 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:08:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:08:34,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:34,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:34,413 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 03:08:34,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621252041] [2020-10-15 03:08:34,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:34,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:34,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681166128] [2020-10-15 03:08:34,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:34,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:34,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:34,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:34,416 INFO L87 Difference]: Start difference. First operand 12494 states and 21417 transitions. Second operand 5 states. [2020-10-15 03:08:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:43,528 INFO L93 Difference]: Finished difference Result 26359 states and 45256 transitions. [2020-10-15 03:08:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:43,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-15 03:08:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:43,567 INFO L225 Difference]: With dead ends: 26359 [2020-10-15 03:08:43,567 INFO L226 Difference]: Without dead ends: 13882 [2020-10-15 03:08:43,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13882 states. [2020-10-15 03:08:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13882 to 12530. [2020-10-15 03:08:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12530 states. [2020-10-15 03:08:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12530 states to 12530 states and 21478 transitions. [2020-10-15 03:08:44,490 INFO L78 Accepts]: Start accepts. Automaton has 12530 states and 21478 transitions. Word has length 173 [2020-10-15 03:08:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:44,490 INFO L479 AbstractCegarLoop]: Abstraction has 12530 states and 21478 transitions. [2020-10-15 03:08:44,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12530 states and 21478 transitions. [2020-10-15 03:08:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-15 03:08:44,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:44,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:44,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:08:44,517 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 646766250, now seen corresponding path program 1 times [2020-10-15 03:08:44,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:44,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54423344] [2020-10-15 03:08:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:49,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 03:08:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:08:49,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 03:08:49,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:49,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:08:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 03:08:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:50,275 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:08:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:50,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:50,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:08:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:50,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:51,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54423344] [2020-10-15 03:08:51,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:51,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:51,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854161924] [2020-10-15 03:08:51,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:51,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:51,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:51,051 INFO L87 Difference]: Start difference. First operand 12530 states and 21478 transitions. Second operand 5 states. [2020-10-15 03:09:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:06,418 INFO L93 Difference]: Finished difference Result 35141 states and 60127 transitions. [2020-10-15 03:09:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:06,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-15 03:09:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:06,476 INFO L225 Difference]: With dead ends: 35141 [2020-10-15 03:09:06,477 INFO L226 Difference]: Without dead ends: 23341 [2020-10-15 03:09:06,504 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 03:09:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23341 states. [2020-10-15 03:09:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23341 to 12990. [2020-10-15 03:09:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12990 states. [2020-10-15 03:09:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12990 states to 12990 states and 22274 transitions. [2020-10-15 03:09:07,443 INFO L78 Accepts]: Start accepts. Automaton has 12990 states and 22274 transitions. Word has length 175 [2020-10-15 03:09:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:07,443 INFO L479 AbstractCegarLoop]: Abstraction has 12990 states and 22274 transitions. [2020-10-15 03:09:07,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:09:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 12990 states and 22274 transitions. [2020-10-15 03:09:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 03:09:07,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:07,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:07,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:09:07,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2067073916, now seen corresponding path program 1 times [2020-10-15 03:09:07,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:07,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578433655] [2020-10-15 03:09:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:07,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:12,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 03:09:12,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:09:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:13,082 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:09:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:09:13,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:13,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:13,209 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 03:09:13,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578433655] [2020-10-15 03:09:13,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:13,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:09:13,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144651569] [2020-10-15 03:09:13,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:09:13,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:13,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:09:13,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:09:13,212 INFO L87 Difference]: Start difference. First operand 12990 states and 22274 transitions. Second operand 10 states. [2020-10-15 03:09:13,786 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2020-10-15 03:09:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:40,879 INFO L93 Difference]: Finished difference Result 73984 states and 124533 transitions. [2020-10-15 03:09:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 03:09:40,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-15 03:09:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:40,985 INFO L225 Difference]: With dead ends: 73984 [2020-10-15 03:09:40,986 INFO L226 Difference]: Without dead ends: 68368 [2020-10-15 03:09:41,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-10-15 03:09:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68368 states. [2020-10-15 03:09:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68368 to 39410. [2020-10-15 03:09:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39410 states. [2020-10-15 03:09:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39410 states to 39410 states and 66758 transitions. [2020-10-15 03:09:44,484 INFO L78 Accepts]: Start accepts. Automaton has 39410 states and 66758 transitions. Word has length 176 [2020-10-15 03:09:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:44,485 INFO L479 AbstractCegarLoop]: Abstraction has 39410 states and 66758 transitions. [2020-10-15 03:09:44,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:09:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 39410 states and 66758 transitions. [2020-10-15 03:09:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 03:09:44,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:44,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:44,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:09:44,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:44,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1101150204, now seen corresponding path program 1 times [2020-10-15 03:09:44,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:44,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467449680] [2020-10-15 03:09:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 03:09:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:09:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 03:09:49,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:49,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-15 03:09:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:09:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:50,121 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:09:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:50,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:50,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:50,186 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 03:09:50,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467449680] [2020-10-15 03:09:50,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:50,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:09:50,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917794751] [2020-10-15 03:09:50,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:09:50,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:09:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:09:50,189 INFO L87 Difference]: Start difference. First operand 39410 states and 66758 transitions. Second operand 4 states. [2020-10-15 03:10:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:04,465 INFO L93 Difference]: Finished difference Result 102962 states and 174766 transitions. [2020-10-15 03:10:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:10:04,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-15 03:10:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:04,606 INFO L225 Difference]: With dead ends: 102962 [2020-10-15 03:10:04,606 INFO L226 Difference]: Without dead ends: 69970 [2020-10-15 03:10:04,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:10:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69970 states. [2020-10-15 03:10:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69970 to 66222. [2020-10-15 03:10:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66222 states. [2020-10-15 03:10:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66222 states to 66222 states and 111642 transitions. [2020-10-15 03:10:10,378 INFO L78 Accepts]: Start accepts. Automaton has 66222 states and 111642 transitions. Word has length 176 [2020-10-15 03:10:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:10,378 INFO L479 AbstractCegarLoop]: Abstraction has 66222 states and 111642 transitions. [2020-10-15 03:10:10,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:10:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 66222 states and 111642 transitions. [2020-10-15 03:10:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 03:10:10,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:10,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:10,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:10:10,466 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash 542405327, now seen corresponding path program 1 times [2020-10-15 03:10:10,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:10,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145413730] [2020-10-15 03:10:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:10:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:10:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:16,193 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:10:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:16,277 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 03:10:16,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145413730] [2020-10-15 03:10:16,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:16,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:16,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250111161] [2020-10-15 03:10:16,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:16,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:16,293 INFO L87 Difference]: Start difference. First operand 66222 states and 111642 transitions. Second operand 5 states. [2020-10-15 03:10:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:41,328 INFO L93 Difference]: Finished difference Result 196074 states and 330801 transitions. [2020-10-15 03:10:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:41,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-15 03:10:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:41,491 INFO L225 Difference]: With dead ends: 196074 [2020-10-15 03:10:41,491 INFO L226 Difference]: Without dead ends: 129929 [2020-10-15 03:10:41,557 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 03:10:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129929 states. [2020-10-15 03:10:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129929 to 129925. [2020-10-15 03:10:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129925 states. [2020-10-15 03:10:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129925 states to 129925 states and 218305 transitions. [2020-10-15 03:10:56,386 INFO L78 Accepts]: Start accepts. Automaton has 129925 states and 218305 transitions. Word has length 185 [2020-10-15 03:10:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 129925 states and 218305 transitions. [2020-10-15 03:10:56,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 129925 states and 218305 transitions. [2020-10-15 03:10:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-15 03:10:56,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:56,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:56,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:10:56,561 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash 304226407, now seen corresponding path program 1 times [2020-10-15 03:10:56,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:56,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284389611] [2020-10-15 03:10:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:01,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:11:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:11:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:11:01,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:02,222 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-15 03:11:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:02,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:02,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:11:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:02,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:02,304 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 03:11:02,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284389611] [2020-10-15 03:11:02,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:02,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:11:02,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553441600] [2020-10-15 03:11:02,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:11:02,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:11:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:11:02,307 INFO L87 Difference]: Start difference. First operand 129925 states and 218305 transitions. Second operand 4 states.