/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:20:15,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:20:15,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:20:15,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:20:15,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:20:15,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:20:15,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:20:15,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:20:15,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:20:15,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:20:15,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:20:15,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:20:15,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:20:15,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:20:15,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:20:15,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:20:15,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:20:15,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:20:15,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:20:15,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:20:15,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:20:15,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:20:15,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:20:15,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:20:15,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:20:15,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:20:15,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:20:15,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:20:15,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:20:15,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:20:15,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:20:15,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:20:15,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:20:15,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:20:15,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:20:15,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:20:15,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:20:15,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:20:15,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:20:15,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:20:15,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:20:15,347 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 [2020-10-12 20:20:15,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:20:15,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:20:15,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:20:15,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:20:15,388 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:20:15,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:20:15,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:20:15,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:20:15,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:20:15,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:20:15,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:20:15,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:20:15,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:20:15,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:20:15,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:20:15,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:20:15,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:20:15,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:20:15,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:20:15,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:20:15,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:20:15,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:20:15,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:20:15,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:20:15,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:20:15,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:20:15,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:20:15,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:20:15,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:20:15,394 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:20:15,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:20:15,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:20:15,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:20:15,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:20:15,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:20:15,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:20:15,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acf2d88c/c7f14f3eb48348089ea40df8f484771b/FLAGee39ee584 [2020-10-12 20:20:16,422 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:20:16,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:20:16,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acf2d88c/c7f14f3eb48348089ea40df8f484771b/FLAGee39ee584 [2020-10-12 20:20:16,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acf2d88c/c7f14f3eb48348089ea40df8f484771b [2020-10-12 20:20:16,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:20:16,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:20:16,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:20:16,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:20:16,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:20:16,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:20:16" (1/1) ... [2020-10-12 20:20:16,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68901205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:16, skipping insertion in model container [2020-10-12 20:20:16,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:20:16" (1/1) ... [2020-10-12 20:20:16,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:20:16,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:20:17,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:20:17,461 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:20:17,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:20:17,606 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:20:17,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17 WrapperNode [2020-10-12 20:20:17,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:20:17,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:20:17,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:20:17,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:20:17,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:20:17,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:20:17,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:20:17,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:20:17,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (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 [2020-10-12 20:20:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:20:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:20:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:20:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:20:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:20:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:20:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:20:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:20:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:20:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:20:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:20:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:20:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:20:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:20:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:20:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:20:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:20:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:20:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:20:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:20:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:20:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:20:19,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:20:19,290 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:20:19,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:20:19 BoogieIcfgContainer [2020-10-12 20:20:19,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:20:19,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:20:19,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:20:19,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:20:19,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:20:16" (1/3) ... [2020-10-12 20:20:19,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f301a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:20:19, skipping insertion in model container [2020-10-12 20:20:19,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (2/3) ... [2020-10-12 20:20:19,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f301a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:20:19, skipping insertion in model container [2020-10-12 20:20:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:20:19" (3/3) ... [2020-10-12 20:20:19,306 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:20:19,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:20:19,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:20:19,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:20:19,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:20:19,370 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:20:19,370 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:20:19,371 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:20:19,371 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:20:19,371 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:20:19,371 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:20:19,371 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:20:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states. [2020-10-12 20:20:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:20:19,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:19,415 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] [2020-10-12 20:20:19,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash -743554307, now seen corresponding path program 1 times [2020-10-12 20:20:19,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:19,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302422802] [2020-10-12 20:20:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:21,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:24,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:20:24,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:20:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 20:20:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:20:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:20:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:20:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:20:25,626 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:20:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:20:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:25,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302422802] [2020-10-12 20:20:25,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:25,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:20:25,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963930602] [2020-10-12 20:20:25,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:20:25,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:25,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:20:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:20:25,745 INFO L87 Difference]: Start difference. First operand 343 states. Second operand 7 states. [2020-10-12 20:20:26,350 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-12 20:20:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:28,980 INFO L93 Difference]: Finished difference Result 1595 states and 2698 transitions. [2020-10-12 20:20:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:20:28,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-12 20:20:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:29,022 INFO L225 Difference]: With dead ends: 1595 [2020-10-12 20:20:29,022 INFO L226 Difference]: Without dead ends: 1417 [2020-10-12 20:20:29,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:20:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-10-12 20:20:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 491. [2020-10-12 20:20:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-12 20:20:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 820 transitions. [2020-10-12 20:20:29,172 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 820 transitions. Word has length 110 [2020-10-12 20:20:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:29,175 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 820 transitions. [2020-10-12 20:20:29,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:20:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 820 transitions. [2020-10-12 20:20:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:20:29,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:29,187 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] [2020-10-12 20:20:29,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:20:29,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1641515331, now seen corresponding path program 1 times [2020-10-12 20:20:29,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:29,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425404883] [2020-10-12 20:20:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:29,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:34,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:20:34,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:20:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:20:34,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:20:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 20:20:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:20:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:34,832 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:20:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:34,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:34,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:34,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 20:20:34,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:34,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425404883] [2020-10-12 20:20:34,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:34,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:34,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934919052] [2020-10-12 20:20:34,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:20:34,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:34,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:20:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:20:34,969 INFO L87 Difference]: Start difference. First operand 491 states and 820 transitions. Second operand 8 states. [2020-10-12 20:20:35,414 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:20:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:38,998 INFO L93 Difference]: Finished difference Result 3743 states and 6261 transitions. [2020-10-12 20:20:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:20:38,999 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-12 20:20:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:39,026 INFO L225 Difference]: With dead ends: 3743 [2020-10-12 20:20:39,026 INFO L226 Difference]: Without dead ends: 3437 [2020-10-12 20:20:39,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:20:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2020-10-12 20:20:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 1328. [2020-10-12 20:20:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-12 20:20:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2221 transitions. [2020-10-12 20:20:39,173 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2221 transitions. Word has length 111 [2020-10-12 20:20:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:39,176 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 2221 transitions. [2020-10-12 20:20:39,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:20:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2221 transitions. [2020-10-12 20:20:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:20:39,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:39,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:20:39,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:20:39,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash 591022020, now seen corresponding path program 1 times [2020-10-12 20:20:39,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:39,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591720581] [2020-10-12 20:20:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:44,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:44,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:20:44,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:20:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 20:20:44,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:44,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:20:44,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:20:44,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:20:44,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:44,738 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:20:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:44,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:20:44,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:44,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591720581] [2020-10-12 20:20:44,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:44,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:44,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968963393] [2020-10-12 20:20:44,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:20:44,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:44,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:20:44,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:20:44,818 INFO L87 Difference]: Start difference. First operand 1328 states and 2221 transitions. Second operand 8 states. [2020-10-12 20:20:45,246 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:20:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:48,898 INFO L93 Difference]: Finished difference Result 10837 states and 18108 transitions. [2020-10-12 20:20:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:20:48,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-12 20:20:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:48,947 INFO L225 Difference]: With dead ends: 10837 [2020-10-12 20:20:48,948 INFO L226 Difference]: Without dead ends: 9808 [2020-10-12 20:20:48,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:20:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2020-10-12 20:20:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 3780. [2020-10-12 20:20:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3780 states. [2020-10-12 20:20:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 6311 transitions. [2020-10-12 20:20:49,287 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 6311 transitions. Word has length 112 [2020-10-12 20:20:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:49,289 INFO L479 AbstractCegarLoop]: Abstraction has 3780 states and 6311 transitions. [2020-10-12 20:20:49,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:20:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 6311 transitions. [2020-10-12 20:20:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:20:49,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:49,292 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] [2020-10-12 20:20:49,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:20:49,292 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1084761188, now seen corresponding path program 1 times [2020-10-12 20:20:49,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:49,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990774117] [2020-10-12 20:20:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:54,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:54,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:20:54,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:20:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:20:54,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:20:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:20:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:20:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:55,004 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:20:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:20:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990774117] [2020-10-12 20:20:55,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:55,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341197895] [2020-10-12 20:20:55,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:20:55,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:20:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:20:55,098 INFO L87 Difference]: Start difference. First operand 3780 states and 6311 transitions. Second operand 8 states. [2020-10-12 20:20:55,534 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:20:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:59,499 INFO L93 Difference]: Finished difference Result 30984 states and 51665 transitions. [2020-10-12 20:20:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:20:59,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 20:20:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:59,595 INFO L225 Difference]: With dead ends: 30984 [2020-10-12 20:20:59,595 INFO L226 Difference]: Without dead ends: 27633 [2020-10-12 20:20:59,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:20:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27633 states. [2020-10-12 20:21:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27633 to 10586. [2020-10-12 20:21:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10586 states. [2020-10-12 20:21:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10586 states to 10586 states and 17637 transitions. [2020-10-12 20:21:00,640 INFO L78 Accepts]: Start accepts. Automaton has 10586 states and 17637 transitions. Word has length 113 [2020-10-12 20:21:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:00,641 INFO L479 AbstractCegarLoop]: Abstraction has 10586 states and 17637 transitions. [2020-10-12 20:21:00,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:21:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10586 states and 17637 transitions. [2020-10-12 20:21:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:21:00,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:00,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:21:00,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:21:00,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:00,648 INFO L82 PathProgramCache]: Analyzing trace with hash -784635765, now seen corresponding path program 1 times [2020-10-12 20:21:00,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:00,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830633087] [2020-10-12 20:21:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:04,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:21:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4236 [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:21:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:05,388 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:21:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:05,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:05,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:21:05,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:05,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:05,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:05,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830633087] [2020-10-12 20:21:05,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:05,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:21:05,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341453863] [2020-10-12 20:21:05,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:21:05,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:21:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:21:05,454 INFO L87 Difference]: Start difference. First operand 10586 states and 17637 transitions. Second operand 8 states. [2020-10-12 20:21:05,897 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:21:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:13,255 INFO L93 Difference]: Finished difference Result 89910 states and 149621 transitions. [2020-10-12 20:21:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:21:13,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 114 [2020-10-12 20:21:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:13,469 INFO L225 Difference]: With dead ends: 89910 [2020-10-12 20:21:13,470 INFO L226 Difference]: Without dead ends: 79843 [2020-10-12 20:21:13,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:21:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79843 states. [2020-10-12 20:21:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79843 to 29568. [2020-10-12 20:21:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29568 states. [2020-10-12 20:21:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29568 states to 29568 states and 49165 transitions. [2020-10-12 20:21:16,041 INFO L78 Accepts]: Start accepts. Automaton has 29568 states and 49165 transitions. Word has length 114 [2020-10-12 20:21:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:16,041 INFO L479 AbstractCegarLoop]: Abstraction has 29568 states and 49165 transitions. [2020-10-12 20:21:16,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:21:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 29568 states and 49165 transitions. [2020-10-12 20:21:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:21:16,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:16,045 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] [2020-10-12 20:21:16,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:21:16,045 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash 389644475, now seen corresponding path program 1 times [2020-10-12 20:21:16,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:16,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301833648] [2020-10-12 20:21:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:21:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2906 [2020-10-12 20:21:18,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:21:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:21:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:21:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:19,468 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:21:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:21:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:19,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301833648] [2020-10-12 20:21:19,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:19,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:21:19,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192773472] [2020-10-12 20:21:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:21:19,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:21:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:21:19,535 INFO L87 Difference]: Start difference. First operand 29568 states and 49165 transitions. Second operand 7 states. [2020-10-12 20:21:20,133 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:21:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:27,848 INFO L93 Difference]: Finished difference Result 135694 states and 225567 transitions. [2020-10-12 20:21:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:21:27,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 20:21:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:28,153 INFO L225 Difference]: With dead ends: 135694 [2020-10-12 20:21:28,153 INFO L226 Difference]: Without dead ends: 106646 [2020-10-12 20:21:28,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:21:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106646 states. [2020-10-12 20:21:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106646 to 29568. [2020-10-12 20:21:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29568 states. [2020-10-12 20:21:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29568 states to 29568 states and 49149 transitions. [2020-10-12 20:21:30,998 INFO L78 Accepts]: Start accepts. Automaton has 29568 states and 49149 transitions. Word has length 116 [2020-10-12 20:21:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:30,999 INFO L479 AbstractCegarLoop]: Abstraction has 29568 states and 49149 transitions. [2020-10-12 20:21:30,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:21:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29568 states and 49149 transitions. [2020-10-12 20:21:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:21:31,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:31,002 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] [2020-10-12 20:21:31,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:21:31,003 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1647667688, now seen corresponding path program 1 times [2020-10-12 20:21:31,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:31,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313324693] [2020-10-12 20:21:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:21:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:21:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 20:21:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:36,594 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:21:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:21:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:36,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313324693] [2020-10-12 20:21:36,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:36,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:21:36,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630614768] [2020-10-12 20:21:36,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:21:36,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:36,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:21:36,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:21:36,678 INFO L87 Difference]: Start difference. First operand 29568 states and 49149 transitions. Second operand 7 states. [2020-10-12 20:21:37,211 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-12 20:21:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:45,968 INFO L93 Difference]: Finished difference Result 142328 states and 236546 transitions. [2020-10-12 20:21:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:21:45,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-12 20:21:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:46,227 INFO L225 Difference]: With dead ends: 142328 [2020-10-12 20:21:46,228 INFO L226 Difference]: Without dead ends: 113280 [2020-10-12 20:21:46,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:21:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113280 states. [2020-10-12 20:21:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113280 to 55861. [2020-10-12 20:21:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55861 states. [2020-10-12 20:21:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55861 states to 55861 states and 92689 transitions. [2020-10-12 20:21:51,501 INFO L78 Accepts]: Start accepts. Automaton has 55861 states and 92689 transitions. Word has length 117 [2020-10-12 20:21:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:51,502 INFO L479 AbstractCegarLoop]: Abstraction has 55861 states and 92689 transitions. [2020-10-12 20:21:51,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:21:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 55861 states and 92689 transitions. [2020-10-12 20:21:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:21:51,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:51,505 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] [2020-10-12 20:21:51,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:21:51,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:51,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2047257034, now seen corresponding path program 1 times [2020-10-12 20:21:51,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:51,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22206175] [2020-10-12 20:21:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:53,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:21:53,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-12 20:21:53,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:21:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:21:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:54,236 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:21:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:54,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:21:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:21:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:54,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22206175] [2020-10-12 20:21:54,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:54,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:21:54,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072017547] [2020-10-12 20:21:54,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:21:54,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:54,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:21:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:21:54,326 INFO L87 Difference]: Start difference. First operand 55861 states and 92689 transitions. Second operand 4 states. [2020-10-12 20:21:54,845 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-12 20:22:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:03,820 INFO L93 Difference]: Finished difference Result 136474 states and 226139 transitions. [2020-10-12 20:22:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:03,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-12 20:22:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:03,935 INFO L225 Difference]: With dead ends: 136474 [2020-10-12 20:22:03,935 INFO L226 Difference]: Without dead ends: 80820 [2020-10-12 20:22:03,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80820 states. [2020-10-12 20:22:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80820 to 80638. [2020-10-12 20:22:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80638 states. [2020-10-12 20:22:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80638 states to 80638 states and 133147 transitions. [2020-10-12 20:22:09,758 INFO L78 Accepts]: Start accepts. Automaton has 80638 states and 133147 transitions. Word has length 117 [2020-10-12 20:22:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:09,759 INFO L479 AbstractCegarLoop]: Abstraction has 80638 states and 133147 transitions. [2020-10-12 20:22:09,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:22:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 80638 states and 133147 transitions. [2020-10-12 20:22:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:22:09,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:09,762 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] [2020-10-12 20:22:09,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:22:09,762 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash -802523075, now seen corresponding path program 1 times [2020-10-12 20:22:09,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:09,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276647269] [2020-10-12 20:22:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:14,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:22:14,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:22:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:22:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:22:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:22:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:15,269 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:22:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:15,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276647269] [2020-10-12 20:22:15,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:15,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:15,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68402900] [2020-10-12 20:22:15,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:15,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:15,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:15,325 INFO L87 Difference]: Start difference. First operand 80638 states and 133147 transitions. Second operand 5 states. [2020-10-12 20:22:15,774 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-12 20:22:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:25,601 INFO L93 Difference]: Finished difference Result 162583 states and 268863 transitions. [2020-10-12 20:22:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:22:25,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-12 20:22:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:25,783 INFO L225 Difference]: With dead ends: 162583 [2020-10-12 20:22:25,783 INFO L226 Difference]: Without dead ends: 107097 [2020-10-12 20:22:25,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:22:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107097 states. [2020-10-12 20:22:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107097 to 106913. [2020-10-12 20:22:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106913 states. [2020-10-12 20:22:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106913 states to 106913 states and 175975 transitions. [2020-10-12 20:22:35,744 INFO L78 Accepts]: Start accepts. Automaton has 106913 states and 175975 transitions. Word has length 117 [2020-10-12 20:22:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:35,744 INFO L479 AbstractCegarLoop]: Abstraction has 106913 states and 175975 transitions. [2020-10-12 20:22:35,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 106913 states and 175975 transitions. [2020-10-12 20:22:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:22:35,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:35,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:35,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:22:35,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:35,748 INFO L82 PathProgramCache]: Analyzing trace with hash -346602121, now seen corresponding path program 1 times [2020-10-12 20:22:35,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:35,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045247468] [2020-10-12 20:22:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:35,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:40,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:22:40,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:22:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:22:40,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:22:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:41,210 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:22:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:41,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:22:41,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:41,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045247468] [2020-10-12 20:22:41,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:41,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:41,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637105570] [2020-10-12 20:22:41,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:41,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:41,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:41,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:41,263 INFO L87 Difference]: Start difference. First operand 106913 states and 175975 transitions. Second operand 5 states. [2020-10-12 20:22:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:59,107 INFO L93 Difference]: Finished difference Result 315906 states and 519874 transitions. [2020-10-12 20:22:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:59,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:22:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:59,401 INFO L225 Difference]: With dead ends: 315906 [2020-10-12 20:22:59,401 INFO L226 Difference]: Without dead ends: 209028 [2020-10-12 20:22:59,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209028 states. [2020-10-12 20:23:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209028 to 209026. [2020-10-12 20:23:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209026 states. [2020-10-12 20:23:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209026 states to 209026 states and 342373 transitions. [2020-10-12 20:23:18,891 INFO L78 Accepts]: Start accepts. Automaton has 209026 states and 342373 transitions. Word has length 120 [2020-10-12 20:23:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:18,892 INFO L479 AbstractCegarLoop]: Abstraction has 209026 states and 342373 transitions. [2020-10-12 20:23:18,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 209026 states and 342373 transitions. [2020-10-12 20:23:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:23:18,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:18,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:18,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:23:18,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:18,897 INFO L82 PathProgramCache]: Analyzing trace with hash -811562943, now seen corresponding path program 1 times [2020-10-12 20:23:18,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:18,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023093887] [2020-10-12 20:23:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5708 [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:23:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:25,113 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:23:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:25,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023093887] [2020-10-12 20:23:25,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:25,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:25,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557521502] [2020-10-12 20:23:25,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:25,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:25,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:25,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:25,162 INFO L87 Difference]: Start difference. First operand 209026 states and 342373 transitions. Second operand 5 states.