/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=NARROWEST --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/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:29:40,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:29:40,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:29:40,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:29:40,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:29:40,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:29:40,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:29:40,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:29:40,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:29:40,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:29:40,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:29:40,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:29:40,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:29:40,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:29:40,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:29:40,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:29:40,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:29:40,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:29:40,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:29:40,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:29:40,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:29:40,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:29:40,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:29:40,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:29:40,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:29:40,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:29:40,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:29:40,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:29:40,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:29:40,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:29:40,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:29:40,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:29:40,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:29:40,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:29:40,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:29:40,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:29:40,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:29:40,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:29:40,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:29:40,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:29:40,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:29:40,365 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 [2020-10-13 13:29:40,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:29:40,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:29:40,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:29:40,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:29:40,389 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:29:40,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:29:40,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:29:40,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:29:40,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:29:40,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:29:40,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:29:40,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:29:40,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:29:40,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:29:40,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:29:40,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:29:40,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:29:40,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:29:40,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:29:40,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:29:40,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:29:40,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:29:40,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:29:40,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:29:40,394 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:29:40,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:29:40,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:29:40,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:29:40,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:29:40,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:29:40,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:29:40,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b23620f1e/8780902ecccc4b239304777b2d805fc3/FLAGb1a64202f [2020-10-13 13:29:41,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:29:41,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:29:41,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b23620f1e/8780902ecccc4b239304777b2d805fc3/FLAGb1a64202f [2020-10-13 13:29:41,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b23620f1e/8780902ecccc4b239304777b2d805fc3 [2020-10-13 13:29:41,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:29:41,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:29:41,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:29:41,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:29:41,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:29:41,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:29:41" (1/1) ... [2020-10-13 13:29:41,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c6b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:41, skipping insertion in model container [2020-10-13 13:29:41,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:29:41" (1/1) ... [2020-10-13 13:29:41,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:29:41,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:29:41,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:29:41,911 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:29:42,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:29:42,057 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:29:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42 WrapperNode [2020-10-13 13:29:42,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:29:42,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:29:42,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:29:42,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:29:42,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (1/1) ... [2020-10-13 13:29:42,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:29:42,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:29:42,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:29:42,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:29:42,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (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 [2020-10-13 13:29:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:29:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:29:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:29:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:29:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:29:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:29:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:29:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:29:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:29:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:29:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:29:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:29:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:29:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:29:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:29:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:29:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:29:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:29:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:29:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:29:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:29:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:29:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:29:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:29:42,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:29:42,724 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:29:42,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:29:42 BoogieIcfgContainer [2020-10-13 13:29:42,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:29:42,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:29:42,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:29:42,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:29:42,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:29:41" (1/3) ... [2020-10-13 13:29:42,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac53d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:29:42, skipping insertion in model container [2020-10-13 13:29:42,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:29:42" (2/3) ... [2020-10-13 13:29:42,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac53d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:29:42, skipping insertion in model container [2020-10-13 13:29:42,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:29:42" (3/3) ... [2020-10-13 13:29:42,749 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:29:42,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:29:42,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:29:42,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:29:42,816 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:29:42,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:29:42,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:29:42,817 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:29:42,817 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:29:42,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:29:42,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:29:42,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:29:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-10-13 13:29:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 13:29:42,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:29:42,862 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] [2020-10-13 13:29:42,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:29:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:29:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1262742084, now seen corresponding path program 1 times [2020-10-13 13:29:42,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:29:42,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301073091] [2020-10-13 13:29:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:29:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 13:29:43,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-13 13:29:43,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:29:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:29:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:29:43,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:29:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:29:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:43,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:43,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:29:43,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:29:43,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:29:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:43,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:43,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:43,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:29:43,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:29:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:29:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:43,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:29:43,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:29:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:43,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:43,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:29:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:29:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:29:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:44,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:44,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:29:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:29:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:29:44,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301073091] [2020-10-13 13:29:44,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:29:44,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:29:44,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980156706] [2020-10-13 13:29:44,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:29:44,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:29:44,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:29:44,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:29:44,068 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 10 states. [2020-10-13 13:29:44,342 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-13 13:29:44,551 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 13:29:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:29:45,545 INFO L93 Difference]: Finished difference Result 199 states and 291 transitions. [2020-10-13 13:29:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:29:45,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-13 13:29:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:29:45,560 INFO L225 Difference]: With dead ends: 199 [2020-10-13 13:29:45,560 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 13:29:45,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:29:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 13:29:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2020-10-13 13:29:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 13:29:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2020-10-13 13:29:45,621 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 49 [2020-10-13 13:29:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:29:45,622 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2020-10-13 13:29:45,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:29:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2020-10-13 13:29:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:29:45,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:29:45,625 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] [2020-10-13 13:29:45,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:29:45,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:29:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:29:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 172488698, now seen corresponding path program 1 times [2020-10-13 13:29:45,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:29:45,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013200505] [2020-10-13 13:29:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:29:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 13:29:50,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:29:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4900 [2020-10-13 13:29:50,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:29:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:29:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:29:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:29:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:29:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:29:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:29:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:29:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:29:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:29:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:29:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:29:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:29:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:29:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:29:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:29:50,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:50,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:29:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:29:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:50,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:29:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:50,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:29:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:29:50,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013200505] [2020-10-13 13:29:50,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:29:50,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:29:50,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129789488] [2020-10-13 13:29:50,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:29:50,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:29:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:29:50,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:29:50,959 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand 9 states. [2020-10-13 13:29:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:29:52,128 INFO L93 Difference]: Finished difference Result 234 states and 318 transitions. [2020-10-13 13:29:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:29:52,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-13 13:29:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:29:52,133 INFO L225 Difference]: With dead ends: 234 [2020-10-13 13:29:52,133 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 13:29:52,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:29:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 13:29:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2020-10-13 13:29:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-13 13:29:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 210 transitions. [2020-10-13 13:29:52,157 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 210 transitions. Word has length 65 [2020-10-13 13:29:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:29:52,157 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 210 transitions. [2020-10-13 13:29:52,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:29:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 210 transitions. [2020-10-13 13:29:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 13:29:52,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:29:52,161 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] [2020-10-13 13:29:52,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:29:52,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:29:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:29:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash 106817806, now seen corresponding path program 1 times [2020-10-13 13:29:52,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:29:52,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736456873] [2020-10-13 13:29:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:29:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:29:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:29:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-13 13:29:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:29:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:29:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:29:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:29:54,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:54,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:29:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:29:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:29:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:29:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:54,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:29:54,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:29:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:29:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:54,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:29:54,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:29:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:29:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:29:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:54,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:54,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:29:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:29:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:29:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:29:54,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736456873] [2020-10-13 13:29:54,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:29:54,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:29:54,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691002376] [2020-10-13 13:29:54,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:29:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:29:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:29:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:29:54,225 INFO L87 Difference]: Start difference. First operand 157 states and 210 transitions. Second operand 9 states. [2020-10-13 13:29:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:29:55,286 INFO L93 Difference]: Finished difference Result 393 states and 540 transitions. [2020-10-13 13:29:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:29:55,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-13 13:29:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:29:55,293 INFO L225 Difference]: With dead ends: 393 [2020-10-13 13:29:55,294 INFO L226 Difference]: Without dead ends: 267 [2020-10-13 13:29:55,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:29:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-13 13:29:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2020-10-13 13:29:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-13 13:29:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 348 transitions. [2020-10-13 13:29:55,347 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 348 transitions. Word has length 66 [2020-10-13 13:29:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:29:55,349 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 348 transitions. [2020-10-13 13:29:55,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:29:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 348 transitions. [2020-10-13 13:29:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 13:29:55,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:29:55,355 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] [2020-10-13 13:29:55,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:29:55,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:29:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:29:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 223568408, now seen corresponding path program 1 times [2020-10-13 13:29:55,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:29:55,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069106771] [2020-10-13 13:29:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:29:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:29:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:29:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-13 13:29:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:29:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:29:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:29:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:29:56,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:29:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:29:56,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:29:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:29:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:29:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:29:56,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:29:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:29:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:29:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:29:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:29:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:29:56,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:29:56,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:56,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:29:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:29:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:29:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:56,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:29:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:29:56,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069106771] [2020-10-13 13:29:56,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:29:56,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:29:56,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065694369] [2020-10-13 13:29:56,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:29:56,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:29:56,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:29:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:29:56,413 INFO L87 Difference]: Start difference. First operand 257 states and 348 transitions. Second operand 9 states. [2020-10-13 13:29:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:29:57,494 INFO L93 Difference]: Finished difference Result 673 states and 922 transitions. [2020-10-13 13:29:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:29:57,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-13 13:29:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:29:57,499 INFO L225 Difference]: With dead ends: 673 [2020-10-13 13:29:57,499 INFO L226 Difference]: Without dead ends: 447 [2020-10-13 13:29:57,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:29:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-13 13:29:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 433. [2020-10-13 13:29:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-13 13:29:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 584 transitions. [2020-10-13 13:29:57,558 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 584 transitions. Word has length 67 [2020-10-13 13:29:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:29:57,559 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 584 transitions. [2020-10-13 13:29:57,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:29:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 584 transitions. [2020-10-13 13:29:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:29:57,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:29:57,566 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] [2020-10-13 13:29:57,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:29:57,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:29:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:29:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash 658794994, now seen corresponding path program 1 times [2020-10-13 13:29:57,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:29:57,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948808622] [2020-10-13 13:29:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:29:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 13:29:58,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:29:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-10-13 13:29:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:29:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:29:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 13:29:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:29:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:29:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:29:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:29:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:29:58,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:29:58,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:29:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:29:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:58,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:29:58,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:29:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:29:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:29:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:29:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:29:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:29:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:29:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:29:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:29:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:29:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:29:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:29:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:29:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:29:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:29:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:29:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:29:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:29:58,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:29:58,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:29:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:29:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:29:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:29:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:29:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:29:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:29:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:29:58,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948808622] [2020-10-13 13:29:58,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:29:58,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:29:58,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127907447] [2020-10-13 13:29:58,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:29:58,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:29:58,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:29:58,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:29:58,828 INFO L87 Difference]: Start difference. First operand 433 states and 584 transitions. Second operand 12 states. [2020-10-13 13:30:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:04,224 INFO L93 Difference]: Finished difference Result 3049 states and 4325 transitions. [2020-10-13 13:30:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-13 13:30:04,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-13 13:30:04,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:04,247 INFO L225 Difference]: With dead ends: 3049 [2020-10-13 13:30:04,247 INFO L226 Difference]: Without dead ends: 2647 [2020-10-13 13:30:04,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 13:30:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2020-10-13 13:30:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2597. [2020-10-13 13:30:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2597 states. [2020-10-13 13:30:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3408 transitions. [2020-10-13 13:30:04,485 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3408 transitions. Word has length 68 [2020-10-13 13:30:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:04,487 INFO L479 AbstractCegarLoop]: Abstraction has 2597 states and 3408 transitions. [2020-10-13 13:30:04,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:30:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3408 transitions. [2020-10-13 13:30:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 13:30:04,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:04,489 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] [2020-10-13 13:30:04,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:30:04,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1291546525, now seen corresponding path program 1 times [2020-10-13 13:30:04,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:04,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882804222] [2020-10-13 13:30:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 13:30:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 13:30:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:30:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:30:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:30:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:30:04,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:05,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:05,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:30:05,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:30:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:05,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:05,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:30:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:30:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:05,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:30:05,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:30:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:30:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:30:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:30:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:05,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:30:05,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:30:05,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:30:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:30:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:30:05,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882804222] [2020-10-13 13:30:05,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:30:05,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:30:05,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7377901] [2020-10-13 13:30:05,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:30:05,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:30:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:30:05,273 INFO L87 Difference]: Start difference. First operand 2597 states and 3408 transitions. Second operand 13 states. [2020-10-13 13:30:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:09,326 INFO L93 Difference]: Finished difference Result 17613 states and 23381 transitions. [2020-10-13 13:30:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 13:30:09,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-13 13:30:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:09,448 INFO L225 Difference]: With dead ends: 17613 [2020-10-13 13:30:09,448 INFO L226 Difference]: Without dead ends: 15099 [2020-10-13 13:30:09,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:30:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15099 states. [2020-10-13 13:30:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15099 to 14889. [2020-10-13 13:30:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14889 states. [2020-10-13 13:30:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14889 states to 14889 states and 19432 transitions. [2020-10-13 13:30:10,535 INFO L78 Accepts]: Start accepts. Automaton has 14889 states and 19432 transitions. Word has length 69 [2020-10-13 13:30:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:10,535 INFO L479 AbstractCegarLoop]: Abstraction has 14889 states and 19432 transitions. [2020-10-13 13:30:10,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:30:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 14889 states and 19432 transitions. [2020-10-13 13:30:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:30:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:10,537 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] [2020-10-13 13:30:10,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:30:10,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash 230168201, now seen corresponding path program 1 times [2020-10-13 13:30:10,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:10,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855907826] [2020-10-13 13:30:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 13:30:10,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 13:30:10,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:30:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 13:30:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:30:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:10,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:10,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:30:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:10,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:30:10,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:30:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:30:11,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855907826] [2020-10-13 13:30:11,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:30:11,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:30:11,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358505828] [2020-10-13 13:30:11,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:30:11,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:30:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:30:11,018 INFO L87 Difference]: Start difference. First operand 14889 states and 19432 transitions. Second operand 12 states. [2020-10-13 13:30:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:13,572 INFO L93 Difference]: Finished difference Result 18681 states and 25199 transitions. [2020-10-13 13:30:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:30:13,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-13 13:30:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:13,737 INFO L225 Difference]: With dead ends: 18681 [2020-10-13 13:30:13,738 INFO L226 Difference]: Without dead ends: 18679 [2020-10-13 13:30:13,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:30:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18679 states. [2020-10-13 13:30:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18679 to 16617. [2020-10-13 13:30:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16617 states. [2020-10-13 13:30:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16617 states to 16617 states and 21160 transitions. [2020-10-13 13:30:15,309 INFO L78 Accepts]: Start accepts. Automaton has 16617 states and 21160 transitions. Word has length 70 [2020-10-13 13:30:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:15,311 INFO L479 AbstractCegarLoop]: Abstraction has 16617 states and 21160 transitions. [2020-10-13 13:30:15,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:30:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 16617 states and 21160 transitions. [2020-10-13 13:30:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 13:30:15,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:15,315 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] [2020-10-13 13:30:15,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:30:15,316 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:15,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:15,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1738669819, now seen corresponding path program 1 times [2020-10-13 13:30:15,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:15,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166486648] [2020-10-13 13:30:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:30:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 13:30:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:30:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:30:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:16,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:30:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:30:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:30:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:16,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:16,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:30:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:30:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:30:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:16,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:30:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:30:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:30:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:30:16,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166486648] [2020-10-13 13:30:16,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:30:16,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:30:16,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886796436] [2020-10-13 13:30:16,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:30:16,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:16,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:30:16,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:30:16,321 INFO L87 Difference]: Start difference. First operand 16617 states and 21160 transitions. Second operand 9 states. [2020-10-13 13:30:18,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:18,824 INFO L93 Difference]: Finished difference Result 46525 states and 59937 transitions. [2020-10-13 13:30:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:30:18,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-13 13:30:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:18,946 INFO L225 Difference]: With dead ends: 46525 [2020-10-13 13:30:18,946 INFO L226 Difference]: Without dead ends: 29991 [2020-10-13 13:30:18,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:30:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29991 states. [2020-10-13 13:30:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29991 to 29565. [2020-10-13 13:30:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29565 states. [2020-10-13 13:30:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29565 states to 29565 states and 38088 transitions. [2020-10-13 13:30:20,799 INFO L78 Accepts]: Start accepts. Automaton has 29565 states and 38088 transitions. Word has length 71 [2020-10-13 13:30:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:20,800 INFO L479 AbstractCegarLoop]: Abstraction has 29565 states and 38088 transitions. [2020-10-13 13:30:20,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:30:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand 29565 states and 38088 transitions. [2020-10-13 13:30:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:30:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:20,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:30:20,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:30:20,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1494643089, now seen corresponding path program 1 times [2020-10-13 13:30:20,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:20,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690639806] [2020-10-13 13:30:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:30:22,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 13:30:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:22,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:30:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:22,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:30:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:30:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:22,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:30:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:30:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:30:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:30:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:30:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:30:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:30:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:30:22,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:30:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:30:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:22,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:30:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:30:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:30:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:30:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:30:22,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:30:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:30:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:22,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:22,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:22,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:22,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:22,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:22,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:30:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 13:30:22,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690639806] [2020-10-13 13:30:22,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:30:22,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:30:22,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459637739] [2020-10-13 13:30:22,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:30:22,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:30:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:30:22,883 INFO L87 Difference]: Start difference. First operand 29565 states and 38088 transitions. Second operand 15 states. [2020-10-13 13:30:23,731 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-10-13 13:30:25,126 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-10-13 13:30:26,512 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-13 13:30:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:29,372 INFO L93 Difference]: Finished difference Result 92029 states and 118450 transitions. [2020-10-13 13:30:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 13:30:29,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-10-13 13:30:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:29,656 INFO L225 Difference]: With dead ends: 92029 [2020-10-13 13:30:29,656 INFO L226 Difference]: Without dead ends: 75099 [2020-10-13 13:30:29,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 13:30:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75099 states. [2020-10-13 13:30:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75099 to 72163. [2020-10-13 13:30:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72163 states. [2020-10-13 13:30:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72163 states to 72163 states and 92947 transitions. [2020-10-13 13:30:33,613 INFO L78 Accepts]: Start accepts. Automaton has 72163 states and 92947 transitions. Word has length 108 [2020-10-13 13:30:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:33,614 INFO L479 AbstractCegarLoop]: Abstraction has 72163 states and 92947 transitions. [2020-10-13 13:30:33,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:30:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 72163 states and 92947 transitions. [2020-10-13 13:30:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:30:33,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:33,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:30:33,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:30:33,632 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1535317839, now seen corresponding path program 1 times [2020-10-13 13:30:33,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:33,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758940824] [2020-10-13 13:30:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2876 [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:30:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:30:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:30:36,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:30:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:30:36,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:30:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:36,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:30:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:30:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:30:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:36,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:30:36,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:30:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:30:36,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:30:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:30:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:36,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:30:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:30:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:30:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:30:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:36,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 13:30:36,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758940824] [2020-10-13 13:30:36,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:30:36,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:30:36,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788238109] [2020-10-13 13:30:36,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:30:36,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:36,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:30:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:30:36,890 INFO L87 Difference]: Start difference. First operand 72163 states and 92947 transitions. Second operand 13 states. [2020-10-13 13:30:37,066 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 13:30:37,508 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-13 13:30:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:30:42,970 INFO L93 Difference]: Finished difference Result 153723 states and 198758 transitions. [2020-10-13 13:30:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 13:30:42,971 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-10-13 13:30:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:30:43,233 INFO L225 Difference]: With dead ends: 153723 [2020-10-13 13:30:43,233 INFO L226 Difference]: Without dead ends: 81475 [2020-10-13 13:30:43,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 13:30:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81475 states. [2020-10-13 13:30:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81475 to 79569. [2020-10-13 13:30:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79569 states. [2020-10-13 13:30:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79569 states to 79569 states and 101516 transitions. [2020-10-13 13:30:48,892 INFO L78 Accepts]: Start accepts. Automaton has 79569 states and 101516 transitions. Word has length 108 [2020-10-13 13:30:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:30:48,892 INFO L479 AbstractCegarLoop]: Abstraction has 79569 states and 101516 transitions. [2020-10-13 13:30:48,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:30:48,892 INFO L276 IsEmpty]: Start isEmpty. Operand 79569 states and 101516 transitions. [2020-10-13 13:30:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:30:48,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:30:48,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:30:48,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:30:48,909 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:30:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:30:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 134029549, now seen corresponding path program 1 times [2020-10-13 13:30:48,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:30:48,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597699079] [2020-10-13 13:30:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:30:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:30:50,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:30:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-13 13:30:50,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:30:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:30:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 13:30:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:30:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:30:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:30:50,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:30:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:30:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:30:50,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:30:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:30:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:30:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:30:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:30:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:30:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:30:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:30:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:30:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:30:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:30:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:30:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:30:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:30:50,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:30:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:30:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:30:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:30:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:30:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:50,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:30:50,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:30:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:30:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:30:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:30:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:30:50,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:30:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:30:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:30:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:30:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:30:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:30:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:30:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:30:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:30:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:30:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 13:30:50,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597699079] [2020-10-13 13:30:50,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:30:50,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:30:50,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363306015] [2020-10-13 13:30:50,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:30:50,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:30:50,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:30:50,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:30:50,666 INFO L87 Difference]: Start difference. First operand 79569 states and 101516 transitions. Second operand 15 states. [2020-10-13 13:30:51,351 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-13 13:30:52,638 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-13 13:30:53,330 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-13 13:31:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:31:05,052 INFO L93 Difference]: Finished difference Result 294704 states and 376420 transitions. [2020-10-13 13:31:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 13:31:05,052 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-10-13 13:31:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:31:05,733 INFO L225 Difference]: With dead ends: 294704 [2020-10-13 13:31:05,733 INFO L226 Difference]: Without dead ends: 223066 [2020-10-13 13:31:05,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:31:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223066 states. [2020-10-13 13:31:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223066 to 214293. [2020-10-13 13:31:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214293 states. [2020-10-13 13:31:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214293 states to 214293 states and 274268 transitions. [2020-10-13 13:31:19,953 INFO L78 Accepts]: Start accepts. Automaton has 214293 states and 274268 transitions. Word has length 108 [2020-10-13 13:31:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:31:19,954 INFO L479 AbstractCegarLoop]: Abstraction has 214293 states and 274268 transitions. [2020-10-13 13:31:19,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:31:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 214293 states and 274268 transitions. [2020-10-13 13:31:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:31:19,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:31:19,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:31:19,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:31:19,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:31:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:31:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash 79636651, now seen corresponding path program 1 times [2020-10-13 13:31:19,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:31:19,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851818337] [2020-10-13 13:31:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:31:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1487 [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:31:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 13:31:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:31:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:31:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:31:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:31:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:31:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:31:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:31:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:31:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:31:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:31:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:31:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:31:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:31:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:31:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:31:21,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:31:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:31:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:31:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:31:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:31:21,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:31:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:31:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:31:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:31:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:31:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:31:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:31:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:31:21,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:31:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:31:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:31:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:31:21,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:31:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:31:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:31:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:31:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:31:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:31:21,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:31:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:31:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:31:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:31:21,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:31:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:31:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:31:21,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:31:21,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:31:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:31:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:31:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:31:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:31:21,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:31:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:31:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:31:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:31:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:31:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:31:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:31:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:31:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:31:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 13:31:21,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851818337] [2020-10-13 13:31:21,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:31:21,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:31:21,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510306150] [2020-10-13 13:31:21,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:31:21,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:31:21,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:31:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:31:21,863 INFO L87 Difference]: Start difference. First operand 214293 states and 274268 transitions. Second operand 13 states. [2020-10-13 13:31:22,040 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 13:31:22,463 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-13 13:31:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:31:39,266 INFO L93 Difference]: Finished difference Result 459470 states and 589922 transitions. [2020-10-13 13:31:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 13:31:39,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-10-13 13:31:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:31:39,866 INFO L225 Difference]: With dead ends: 459470 [2020-10-13 13:31:39,866 INFO L226 Difference]: Without dead ends: 244508 [2020-10-13 13:31:40,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 13:31:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244508 states. [2020-10-13 13:32:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244508 to 234285. [2020-10-13 13:32:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234285 states. [2020-10-13 13:32:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234285 states to 234285 states and 296552 transitions. [2020-10-13 13:32:02,556 INFO L78 Accepts]: Start accepts. Automaton has 234285 states and 296552 transitions. Word has length 108 [2020-10-13 13:32:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:32:02,556 INFO L479 AbstractCegarLoop]: Abstraction has 234285 states and 296552 transitions. [2020-10-13 13:32:02,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:32:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 234285 states and 296552 transitions. [2020-10-13 13:32:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:32:02,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:32:02,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:32:02,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:32:02,569 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:32:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:32:02,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2124719669, now seen corresponding path program 1 times [2020-10-13 13:32:02,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:32:02,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730815026] [2020-10-13 13:32:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:32:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:32:05,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:32:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2474 [2020-10-13 13:32:05,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:32:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:32:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:32:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:32:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:32:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:32:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:32:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:32:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:32:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:32:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:32:05,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:32:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:32:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:32:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:32:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:32:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:32:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:32:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:32:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:32:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:32:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:32:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:32:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:32:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:32:05,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:32:05,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:32:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:32:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:32:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:32:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:32:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:32:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:32:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:32:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:32:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:32:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:32:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:32:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:32:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:32:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:32:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:32:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:32:05,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:32:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:32:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:32:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:32:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:32:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:32:05,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:32:05,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:32:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:32:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:32:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:32:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:32:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:32:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:32:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:32:05,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:32:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:32:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:32:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:32:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:32:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:32:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:32:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 13:32:05,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730815026] [2020-10-13 13:32:05,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:32:05,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:32:05,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585573344] [2020-10-13 13:32:05,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:32:05,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:32:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:32:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:32:05,654 INFO L87 Difference]: Start difference. First operand 234285 states and 296552 transitions. Second operand 15 states. [2020-10-13 13:32:05,841 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 13:32:06,174 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 13:32:06,465 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-13 13:32:07,869 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-13 13:32:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:32:45,959 INFO L93 Difference]: Finished difference Result 896879 states and 1143053 transitions. [2020-10-13 13:32:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 13:32:45,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-10-13 13:32:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:32:48,865 INFO L225 Difference]: With dead ends: 896879 [2020-10-13 13:32:48,866 INFO L226 Difference]: Without dead ends: 662677 [2020-10-13 13:32:49,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 13:32:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662677 states.