/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-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:51:55,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:51:55,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:51:55,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:51:55,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:51:55,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:51:55,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:51:55,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:51:55,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:51:55,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:51:55,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:51:55,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:51:55,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:51:55,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:51:55,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:51:55,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:51:55,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:51:55,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:51:55,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:51:55,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:51:55,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:51:55,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:51:55,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:51:55,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:51:55,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:51:55,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:51:55,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:51:55,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:51:55,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:51:55,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:51:55,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:51:55,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:51:55,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:51:55,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:51:55,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:51:55,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:51:55,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:51:55,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:51:55,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:51:55,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:51:55,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:51:55,606 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 14:51:55,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:51:55,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:51:55,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:51:55,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:51:55,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:51:55,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:51:55,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:51:55,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:51:55,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:51:55,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:51:55,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:51:55,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:51:55,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:51:55,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:51:55,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:51:55,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:51:55,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:51:55,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:51:55,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:51:55,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:51:55,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:51:55,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:51:55,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:51:55,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:51:55,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:51:55,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:51:55,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:51:55,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:51:55,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:51:55,659 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 14:51:55,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:51:56,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:51:56,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:51:56,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:51:56,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:51:56,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:51:56,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48aa42340/6180c8de96954de89c88b2c0f089a217/FLAG29e6996ed [2020-10-13 14:51:56,630 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:51:56,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:51:56,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48aa42340/6180c8de96954de89c88b2c0f089a217/FLAG29e6996ed [2020-10-13 14:51:56,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48aa42340/6180c8de96954de89c88b2c0f089a217 [2020-10-13 14:51:56,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:51:56,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:51:56,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:51:56,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:51:56,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:51:56,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:51:56" (1/1) ... [2020-10-13 14:51:56,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d16764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:56, skipping insertion in model container [2020-10-13 14:51:56,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:51:56" (1/1) ... [2020-10-13 14:51:56,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:51:57,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:51:57,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:51:57,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:51:57,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:51:58,004 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:51:58,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58 WrapperNode [2020-10-13 14:51:58,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:51:58,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:51:58,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:51:58,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:51:58,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (1/1) ... [2020-10-13 14:51:58,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:51:58,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:51:58,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:51:58,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:51:58,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (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 14:51:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:51:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:51:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:51:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:51:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:51:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:51:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:51:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:51:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:51:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:51:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:51:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:51:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:51:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:51:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:51:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:51:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:51:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:51:59,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:51:59,795 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:51:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:51:59 BoogieIcfgContainer [2020-10-13 14:51:59,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:51:59,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:51:59,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:51:59,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:51:59,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:51:56" (1/3) ... [2020-10-13 14:51:59,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd49b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:51:59, skipping insertion in model container [2020-10-13 14:51:59,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:51:58" (2/3) ... [2020-10-13 14:51:59,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd49b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:51:59, skipping insertion in model container [2020-10-13 14:51:59,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:51:59" (3/3) ... [2020-10-13 14:51:59,813 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-13 14:51:59,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:51:59,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:51:59,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:51:59,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:51:59,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:51:59,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:51:59,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:51:59,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:51:59,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:51:59,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:51:59,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:51:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states. [2020-10-13 14:51:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 14:51:59,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:59,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:51:59,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2114966655, now seen corresponding path program 1 times [2020-10-13 14:51:59,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:59,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117007179] [2020-10-13 14:51:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:05,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 14:52:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:52:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:52:05,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:52:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 14:52:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:52:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:52:05,827 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:05,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:05,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:05,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:52:05,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:52:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:52:05,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117007179] [2020-10-13 14:52:05,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:05,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066267343] [2020-10-13 14:52:05,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:52:05,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:52:05,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:05,992 INFO L87 Difference]: Start difference. First operand 492 states. Second operand 5 states. [2020-10-13 14:52:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:08,368 INFO L93 Difference]: Finished difference Result 941 states and 1526 transitions. [2020-10-13 14:52:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:52:08,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 14:52:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:08,390 INFO L225 Difference]: With dead ends: 941 [2020-10-13 14:52:08,390 INFO L226 Difference]: Without dead ends: 488 [2020-10-13 14:52:08,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-13 14:52:08,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2020-10-13 14:52:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-13 14:52:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 752 transitions. [2020-10-13 14:52:08,480 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 752 transitions. Word has length 123 [2020-10-13 14:52:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:08,480 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 752 transitions. [2020-10-13 14:52:08,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:52:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 752 transitions. [2020-10-13 14:52:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 14:52:08,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:08,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:08,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:52:08,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1878866601, now seen corresponding path program 1 times [2020-10-13 14:52:08,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:08,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439116910] [2020-10-13 14:52:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 14:52:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:52:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:52:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:52:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-13 14:52:13,950 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:13,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:52:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:14,010 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 14:52:14,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439116910] [2020-10-13 14:52:14,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:14,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:14,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355748334] [2020-10-13 14:52:14,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:52:14,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:14,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:52:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:14,016 INFO L87 Difference]: Start difference. First operand 488 states and 752 transitions. Second operand 5 states. [2020-10-13 14:52:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:15,944 INFO L93 Difference]: Finished difference Result 820 states and 1282 transitions. [2020-10-13 14:52:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:15,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 14:52:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:15,952 INFO L225 Difference]: With dead ends: 820 [2020-10-13 14:52:15,952 INFO L226 Difference]: Without dead ends: 488 [2020-10-13 14:52:15,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-13 14:52:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2020-10-13 14:52:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-13 14:52:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 750 transitions. [2020-10-13 14:52:16,011 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 750 transitions. Word has length 163 [2020-10-13 14:52:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:16,013 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 750 transitions. [2020-10-13 14:52:16,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:52:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 750 transitions. [2020-10-13 14:52:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 14:52:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:16,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:16,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:52:16,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1032297472, now seen corresponding path program 1 times [2020-10-13 14:52:16,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:16,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018650087] [2020-10-13 14:52:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 14:52:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:52:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:52:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:52:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 14:52:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:52:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:21,353 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:21,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:21,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:21,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:21,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:52:21,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:21,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:52:21,436 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 14:52:21,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018650087] [2020-10-13 14:52:21,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:21,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:21,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495508851] [2020-10-13 14:52:21,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:52:21,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:21,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:52:21,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:21,439 INFO L87 Difference]: Start difference. First operand 488 states and 750 transitions. Second operand 5 states. [2020-10-13 14:52:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:23,743 INFO L93 Difference]: Finished difference Result 711 states and 1105 transitions. [2020-10-13 14:52:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:23,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 14:52:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:23,747 INFO L225 Difference]: With dead ends: 711 [2020-10-13 14:52:23,747 INFO L226 Difference]: Without dead ends: 488 [2020-10-13 14:52:23,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-13 14:52:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2020-10-13 14:52:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-13 14:52:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 748 transitions. [2020-10-13 14:52:23,767 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 748 transitions. Word has length 164 [2020-10-13 14:52:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:23,768 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 748 transitions. [2020-10-13 14:52:23,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:52:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 748 transitions. [2020-10-13 14:52:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 14:52:23,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:23,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:23,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:52:23,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash -123306356, now seen corresponding path program 1 times [2020-10-13 14:52:23,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:23,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016963588] [2020-10-13 14:52:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:23,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:28,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 14:52:28,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:52:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:29,124 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:52:29,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:29,198 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 14:52:29,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016963588] [2020-10-13 14:52:29,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:29,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:52:29,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177332832] [2020-10-13 14:52:29,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:52:29,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:52:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:52:29,202 INFO L87 Difference]: Start difference. First operand 488 states and 748 transitions. Second operand 4 states. [2020-10-13 14:52:29,398 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 14:52:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:31,576 INFO L93 Difference]: Finished difference Result 1149 states and 1797 transitions. [2020-10-13 14:52:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:31,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 14:52:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:31,583 INFO L225 Difference]: With dead ends: 1149 [2020-10-13 14:52:31,583 INFO L226 Difference]: Without dead ends: 863 [2020-10-13 14:52:31,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-13 14:52:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 828. [2020-10-13 14:52:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-10-13 14:52:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1286 transitions. [2020-10-13 14:52:31,624 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1286 transitions. Word has length 165 [2020-10-13 14:52:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:31,624 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 1286 transitions. [2020-10-13 14:52:31,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:52:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1286 transitions. [2020-10-13 14:52:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 14:52:31,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:31,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:31,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:52:31,628 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1154444582, now seen corresponding path program 1 times [2020-10-13 14:52:31,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:31,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692546855] [2020-10-13 14:52:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:36,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:36,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 14:52:36,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:52:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:52:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 14:52:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:52:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:36,912 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:36,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:36,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:52:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:36,982 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 14:52:36,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692546855] [2020-10-13 14:52:36,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:36,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:52:36,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801454881] [2020-10-13 14:52:36,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:52:36,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:36,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:52:36,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:52:36,985 INFO L87 Difference]: Start difference. First operand 828 states and 1286 transitions. Second operand 4 states. [2020-10-13 14:52:37,222 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 14:52:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:39,275 INFO L93 Difference]: Finished difference Result 1922 states and 3015 transitions. [2020-10-13 14:52:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:39,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-13 14:52:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:39,285 INFO L225 Difference]: With dead ends: 1922 [2020-10-13 14:52:39,285 INFO L226 Difference]: Without dead ends: 1456 [2020-10-13 14:52:39,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-10-13 14:52:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1388. [2020-10-13 14:52:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-10-13 14:52:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2165 transitions. [2020-10-13 14:52:39,358 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2165 transitions. Word has length 167 [2020-10-13 14:52:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:39,358 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 2165 transitions. [2020-10-13 14:52:39,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:52:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2165 transitions. [2020-10-13 14:52:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 14:52:39,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:39,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:39,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:52:39,364 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:39,365 INFO L82 PathProgramCache]: Analyzing trace with hash -486528716, now seen corresponding path program 1 times [2020-10-13 14:52:39,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:39,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872420361] [2020-10-13 14:52:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 14:52:44,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:52:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:52:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:52:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:52:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:44,695 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:44,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:44,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:52:44,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:44,754 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 14:52:44,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872420361] [2020-10-13 14:52:44,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:44,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:52:44,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977228851] [2020-10-13 14:52:44,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:52:44,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:44,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:52:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:52:44,757 INFO L87 Difference]: Start difference. First operand 1388 states and 2165 transitions. Second operand 4 states. [2020-10-13 14:52:45,000 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:52:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:47,126 INFO L93 Difference]: Finished difference Result 3268 states and 5119 transitions. [2020-10-13 14:52:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:47,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 14:52:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:47,138 INFO L225 Difference]: With dead ends: 3268 [2020-10-13 14:52:47,138 INFO L226 Difference]: Without dead ends: 2474 [2020-10-13 14:52:47,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2020-10-13 14:52:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2340. [2020-10-13 14:52:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2020-10-13 14:52:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3645 transitions. [2020-10-13 14:52:47,244 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3645 transitions. Word has length 169 [2020-10-13 14:52:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:47,245 INFO L479 AbstractCegarLoop]: Abstraction has 2340 states and 3645 transitions. [2020-10-13 14:52:47,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:52:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3645 transitions. [2020-10-13 14:52:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 14:52:47,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:47,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:47,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:52:47,252 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1150583338, now seen corresponding path program 1 times [2020-10-13 14:52:47,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:47,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012314395] [2020-10-13 14:52:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:52,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 14:52:52,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:52:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:52:52,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 14:52:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:52:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:52,550 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:52:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:52,593 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 14:52:52,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012314395] [2020-10-13 14:52:52,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:52,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:52:52,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342339188] [2020-10-13 14:52:52,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:52:52,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:52,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:52:52,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:52:52,596 INFO L87 Difference]: Start difference. First operand 2340 states and 3645 transitions. Second operand 4 states. [2020-10-13 14:52:52,846 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 14:52:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:55,048 INFO L93 Difference]: Finished difference Result 6322 states and 9876 transitions. [2020-10-13 14:52:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:52:55,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-13 14:52:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:55,071 INFO L225 Difference]: With dead ends: 6322 [2020-10-13 14:52:55,071 INFO L226 Difference]: Without dead ends: 4480 [2020-10-13 14:52:55,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:52:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2020-10-13 14:52:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4214. [2020-10-13 14:52:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4214 states. [2020-10-13 14:52:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 6542 transitions. [2020-10-13 14:52:55,314 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 6542 transitions. Word has length 171 [2020-10-13 14:52:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:55,315 INFO L479 AbstractCegarLoop]: Abstraction has 4214 states and 6542 transitions. [2020-10-13 14:52:55,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:52:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 6542 transitions. [2020-10-13 14:52:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 14:52:55,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:55,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:52:55,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:52:55,329 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1182789620, now seen corresponding path program 1 times [2020-10-13 14:52:55,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:55,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252086837] [2020-10-13 14:52:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 14:53:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:53:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:00,646 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:00,677 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 14:53:00,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252086837] [2020-10-13 14:53:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:00,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:00,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487545929] [2020-10-13 14:53:00,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:53:00,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:53:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:53:00,679 INFO L87 Difference]: Start difference. First operand 4214 states and 6542 transitions. Second operand 5 states. [2020-10-13 14:53:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:02,556 INFO L93 Difference]: Finished difference Result 5496 states and 8543 transitions. [2020-10-13 14:53:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:53:02,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 14:53:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:02,578 INFO L225 Difference]: With dead ends: 5496 [2020-10-13 14:53:02,578 INFO L226 Difference]: Without dead ends: 4214 [2020-10-13 14:53:02,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2020-10-13 14:53:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4214. [2020-10-13 14:53:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4214 states. [2020-10-13 14:53:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 6510 transitions. [2020-10-13 14:53:02,742 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 6510 transitions. Word has length 173 [2020-10-13 14:53:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:02,743 INFO L479 AbstractCegarLoop]: Abstraction has 4214 states and 6510 transitions. [2020-10-13 14:53:02,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:53:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 6510 transitions. [2020-10-13 14:53:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 14:53:02,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:02,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:53:02,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:53:02,753 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash -164338485, now seen corresponding path program 1 times [2020-10-13 14:53:02,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:02,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320146971] [2020-10-13 14:53:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:53:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:08,040 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:08,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:08,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:08,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:53:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:08,101 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 14:53:08,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320146971] [2020-10-13 14:53:08,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:08,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:53:08,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998708052] [2020-10-13 14:53:08,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:53:08,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:08,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:53:08,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:08,104 INFO L87 Difference]: Start difference. First operand 4214 states and 6510 transitions. Second operand 4 states. [2020-10-13 14:53:08,343 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 14:53:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:10,687 INFO L93 Difference]: Finished difference Result 10978 states and 16940 transitions. [2020-10-13 14:53:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:53:10,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-13 14:53:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:10,720 INFO L225 Difference]: With dead ends: 10978 [2020-10-13 14:53:10,720 INFO L226 Difference]: Without dead ends: 8000 [2020-10-13 14:53:10,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:53:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2020-10-13 14:53:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 7470. [2020-10-13 14:53:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7470 states. [2020-10-13 14:53:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 11450 transitions. [2020-10-13 14:53:11,044 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 11450 transitions. Word has length 174 [2020-10-13 14:53:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:11,044 INFO L479 AbstractCegarLoop]: Abstraction has 7470 states and 11450 transitions. [2020-10-13 14:53:11,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:53:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 11450 transitions. [2020-10-13 14:53:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:53:11,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:11,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:53:11,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:53:11,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash -142378667, now seen corresponding path program 1 times [2020-10-13 14:53:11,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:11,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371200041] [2020-10-13 14:53:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:16,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:53:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-13 14:53:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:53:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 14:53:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:53:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:16,354 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:16,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:16,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:53:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:16,409 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 14:53:16,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371200041] [2020-10-13 14:53:16,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:16,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:53:16,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116162006] [2020-10-13 14:53:16,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:53:16,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:53:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:16,412 INFO L87 Difference]: Start difference. First operand 7470 states and 11450 transitions. Second operand 4 states. [2020-10-13 14:53:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:19,532 INFO L93 Difference]: Finished difference Result 20736 states and 31839 transitions. [2020-10-13 14:53:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:53:19,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:53:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:19,574 INFO L225 Difference]: With dead ends: 20736 [2020-10-13 14:53:19,574 INFO L226 Difference]: Without dead ends: 14302 [2020-10-13 14:53:19,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14302 states. [2020-10-13 14:53:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14302 to 13820. [2020-10-13 14:53:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-13 14:53:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 21005 transitions. [2020-10-13 14:53:20,029 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 21005 transitions. Word has length 176 [2020-10-13 14:53:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:20,029 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 21005 transitions. [2020-10-13 14:53:20,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:53:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 21005 transitions. [2020-10-13 14:53:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:53:20,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:20,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:53:20,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:53:20,077 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:20,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1128181400, now seen corresponding path program 1 times [2020-10-13 14:53:20,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:20,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501451127] [2020-10-13 14:53:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:21,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:53:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:53:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:25,388 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:25,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:25,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:53:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:25,427 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 14:53:25,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501451127] [2020-10-13 14:53:25,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:25,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:53:25,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47578566] [2020-10-13 14:53:25,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:53:25,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:25,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:53:25,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:25,430 INFO L87 Difference]: Start difference. First operand 13820 states and 21005 transitions. Second operand 4 states. [2020-10-13 14:53:25,676 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 14:53:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:28,933 INFO L93 Difference]: Finished difference Result 23904 states and 36479 transitions. [2020-10-13 14:53:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:53:28,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:53:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:28,960 INFO L225 Difference]: With dead ends: 23904 [2020-10-13 14:53:28,961 INFO L226 Difference]: Without dead ends: 13822 [2020-10-13 14:53:28,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:53:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2020-10-13 14:53:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 13820. [2020-10-13 14:53:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-13 14:53:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 20909 transitions. [2020-10-13 14:53:29,525 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 20909 transitions. Word has length 176 [2020-10-13 14:53:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:29,526 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 20909 transitions. [2020-10-13 14:53:29,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:53:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 20909 transitions. [2020-10-13 14:53:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:53:29,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:29,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:53:29,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:53:29,550 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1887218030, now seen corresponding path program 1 times [2020-10-13 14:53:29,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:29,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742375172] [2020-10-13 14:53:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:30,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:53:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-13 14:53:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:53:34,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:53:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:53:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 14:53:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:34,933 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:34,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:34,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:35,023 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 14:53:35,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742375172] [2020-10-13 14:53:35,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:35,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:53:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402255071] [2020-10-13 14:53:35,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:53:35,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:53:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:35,026 INFO L87 Difference]: Start difference. First operand 13820 states and 20909 transitions. Second operand 9 states. [2020-10-13 14:53:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:43,756 INFO L93 Difference]: Finished difference Result 81854 states and 121943 transitions. [2020-10-13 14:53:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:53:43,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-10-13 14:53:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:43,888 INFO L225 Difference]: With dead ends: 81854 [2020-10-13 14:53:43,888 INFO L226 Difference]: Without dead ends: 68988 [2020-10-13 14:53:43,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68988 states. [2020-10-13 14:53:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68988 to 68978. [2020-10-13 14:53:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68978 states. [2020-10-13 14:53:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68978 states to 68978 states and 102321 transitions. [2020-10-13 14:53:46,828 INFO L78 Accepts]: Start accepts. Automaton has 68978 states and 102321 transitions. Word has length 176 [2020-10-13 14:53:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:46,828 INFO L479 AbstractCegarLoop]: Abstraction has 68978 states and 102321 transitions. [2020-10-13 14:53:46,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:53:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 68978 states and 102321 transitions. [2020-10-13 14:53:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:53:46,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:46,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:53:46,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:53:46,913 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:46,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1598546909, now seen corresponding path program 1 times [2020-10-13 14:53:46,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:46,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90903134] [2020-10-13 14:53:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:51,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:53:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-13 14:53:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:53:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:53:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:53:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:52,214 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:53:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:52,253 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 14:53:52,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90903134] [2020-10-13 14:53:52,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:52,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:53:52,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991223971] [2020-10-13 14:53:52,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:53:52,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:52,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:53:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:52,256 INFO L87 Difference]: Start difference. First operand 68978 states and 102321 transitions. Second operand 4 states. [2020-10-13 14:53:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:58,067 INFO L93 Difference]: Finished difference Result 114422 states and 170291 transitions. [2020-10-13 14:53:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:53:58,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:53:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:58,177 INFO L225 Difference]: With dead ends: 114422 [2020-10-13 14:53:58,177 INFO L226 Difference]: Without dead ends: 68980 [2020-10-13 14:53:58,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68980 states. [2020-10-13 14:54:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68980 to 68978. [2020-10-13 14:54:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68978 states. [2020-10-13 14:54:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68978 states to 68978 states and 101745 transitions. [2020-10-13 14:54:02,954 INFO L78 Accepts]: Start accepts. Automaton has 68978 states and 101745 transitions. Word has length 176 [2020-10-13 14:54:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:02,954 INFO L479 AbstractCegarLoop]: Abstraction has 68978 states and 101745 transitions. [2020-10-13 14:54:02,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 68978 states and 101745 transitions. [2020-10-13 14:54:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:54:03,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:03,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:03,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:54:03,041 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:03,042 INFO L82 PathProgramCache]: Analyzing trace with hash 636772882, now seen corresponding path program 1 times [2020-10-13 14:54:03,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:03,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083006446] [2020-10-13 14:54:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:08,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:54:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:54:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:08,324 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:08,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:08,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:08,362 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 14:54:08,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083006446] [2020-10-13 14:54:08,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:08,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:08,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25754085] [2020-10-13 14:54:08,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:08,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:08,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:08,364 INFO L87 Difference]: Start difference. First operand 68978 states and 101745 transitions. Second operand 4 states. [2020-10-13 14:54:08,611 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 14:54:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:12,464 INFO L93 Difference]: Finished difference Result 90070 states and 133619 transitions. [2020-10-13 14:54:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:54:12,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:54:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:12,541 INFO L225 Difference]: With dead ends: 90070 [2020-10-13 14:54:12,541 INFO L226 Difference]: Without dead ends: 45140 [2020-10-13 14:54:12,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:54:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45140 states. [2020-10-13 14:54:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45140 to 45138. [2020-10-13 14:54:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45138 states. [2020-10-13 14:54:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45138 states to 45138 states and 66941 transitions. [2020-10-13 14:54:14,858 INFO L78 Accepts]: Start accepts. Automaton has 45138 states and 66941 transitions. Word has length 176 [2020-10-13 14:54:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:14,858 INFO L479 AbstractCegarLoop]: Abstraction has 45138 states and 66941 transitions. [2020-10-13 14:54:14,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 45138 states and 66941 transitions. [2020-10-13 14:54:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:54:14,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:14,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:14,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:54:14,894 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:14,894 INFO L82 PathProgramCache]: Analyzing trace with hash -270698005, now seen corresponding path program 1 times [2020-10-13 14:54:14,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:14,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336055390] [2020-10-13 14:54:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:17,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:19,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:19,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:54:19,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-13 14:54:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:54:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 14:54:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:54:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:20,177 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:20,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:20,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:20,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:20,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:20,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:54:20,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:20,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:20,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:20,234 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 14:54:20,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336055390] [2020-10-13 14:54:20,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:20,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:20,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641722202] [2020-10-13 14:54:20,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:20,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:20,236 INFO L87 Difference]: Start difference. First operand 45138 states and 66941 transitions. Second operand 4 states. [2020-10-13 14:54:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:26,327 INFO L93 Difference]: Finished difference Result 80382 states and 119615 transitions. [2020-10-13 14:54:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:54:26,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:54:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:26,374 INFO L225 Difference]: With dead ends: 80382 [2020-10-13 14:54:26,374 INFO L226 Difference]: Without dead ends: 45140 [2020-10-13 14:54:26,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45140 states. [2020-10-13 14:54:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45140 to 45138. [2020-10-13 14:54:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45138 states. [2020-10-13 14:54:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45138 states to 45138 states and 66557 transitions. [2020-10-13 14:54:28,199 INFO L78 Accepts]: Start accepts. Automaton has 45138 states and 66557 transitions. Word has length 176 [2020-10-13 14:54:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:28,200 INFO L479 AbstractCegarLoop]: Abstraction has 45138 states and 66557 transitions. [2020-10-13 14:54:28,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45138 states and 66557 transitions. [2020-10-13 14:54:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:54:28,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:28,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:28,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:54:28,236 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1480509308, now seen corresponding path program 1 times [2020-10-13 14:54:28,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:28,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085127582] [2020-10-13 14:54:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:54:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:54:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:33,498 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:33,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:33,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:33,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:54:33,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:33,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:33,536 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 14:54:33,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085127582] [2020-10-13 14:54:33,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:33,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:33,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456189439] [2020-10-13 14:54:33,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:33,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:33,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:33,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:33,538 INFO L87 Difference]: Start difference. First operand 45138 states and 66557 transitions. Second operand 4 states. [2020-10-13 14:54:33,762 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 14:54:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:36,759 INFO L93 Difference]: Finished difference Result 45142 states and 66559 transitions. [2020-10-13 14:54:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:54:36,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:54:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:36,779 INFO L225 Difference]: With dead ends: 45142 [2020-10-13 14:54:36,780 INFO L226 Difference]: Without dead ends: 22618 [2020-10-13 14:54:36,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:54:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22618 states. [2020-10-13 14:54:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22618 to 22616. [2020-10-13 14:54:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22616 states. [2020-10-13 14:54:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22616 states to 22616 states and 33331 transitions. [2020-10-13 14:54:37,704 INFO L78 Accepts]: Start accepts. Automaton has 22616 states and 33331 transitions. Word has length 176 [2020-10-13 14:54:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:37,704 INFO L479 AbstractCegarLoop]: Abstraction has 22616 states and 33331 transitions. [2020-10-13 14:54:37,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 22616 states and 33331 transitions. [2020-10-13 14:54:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 14:54:37,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:37,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:37,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:54:37,720 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 735653382, now seen corresponding path program 1 times [2020-10-13 14:54:37,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:37,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581079700] [2020-10-13 14:54:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:40,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 14:54:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-13 14:54:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:54:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:54:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:54:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:42,984 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:54:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:43,021 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 14:54:43,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581079700] [2020-10-13 14:54:43,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:43,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:43,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816561944] [2020-10-13 14:54:43,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:43,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:43,023 INFO L87 Difference]: Start difference. First operand 22616 states and 33331 transitions. Second operand 4 states. [2020-10-13 14:54:43,330 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 14:54:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:45,526 INFO L93 Difference]: Finished difference Result 22620 states and 33333 transitions. [2020-10-13 14:54:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:54:45,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-13 14:54:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:45,540 INFO L225 Difference]: With dead ends: 22620 [2020-10-13 14:54:45,540 INFO L226 Difference]: Without dead ends: 11337 [2020-10-13 14:54:45,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:54:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11337 states. [2020-10-13 14:54:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11337 to 11335. [2020-10-13 14:54:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11335 states. [2020-10-13 14:54:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11335 states to 11335 states and 16691 transitions. [2020-10-13 14:54:46,004 INFO L78 Accepts]: Start accepts. Automaton has 11335 states and 16691 transitions. Word has length 176 [2020-10-13 14:54:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:46,004 INFO L479 AbstractCegarLoop]: Abstraction has 11335 states and 16691 transitions. [2020-10-13 14:54:46,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11335 states and 16691 transitions. [2020-10-13 14:54:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 14:54:46,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:46,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:46,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:54:46,013 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 455545517, now seen corresponding path program 1 times [2020-10-13 14:54:46,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:46,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703727454] [2020-10-13 14:54:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:54:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:51,256 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:51,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:51,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:51,295 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 14:54:51,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703727454] [2020-10-13 14:54:51,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:51,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:51,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115974652] [2020-10-13 14:54:51,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:51,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:51,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:51,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:51,298 INFO L87 Difference]: Start difference. First operand 11335 states and 16691 transitions. Second operand 4 states. [2020-10-13 14:54:51,545 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 14:54:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:54,039 INFO L93 Difference]: Finished difference Result 18971 states and 27993 transitions. [2020-10-13 14:54:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:54:54,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-13 14:54:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:54,052 INFO L225 Difference]: With dead ends: 18971 [2020-10-13 14:54:54,052 INFO L226 Difference]: Without dead ends: 10289 [2020-10-13 14:54:54,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:54:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10289 states. [2020-10-13 14:54:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10289 to 10287. [2020-10-13 14:54:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10287 states. [2020-10-13 14:54:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10287 states to 10287 states and 15137 transitions. [2020-10-13 14:54:54,500 INFO L78 Accepts]: Start accepts. Automaton has 10287 states and 15137 transitions. Word has length 178 [2020-10-13 14:54:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:54,500 INFO L479 AbstractCegarLoop]: Abstraction has 10287 states and 15137 transitions. [2020-10-13 14:54:54,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:54:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 10287 states and 15137 transitions. [2020-10-13 14:54:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 14:54:54,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:54,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:54:54,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:54:54,508 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:54,508 INFO L82 PathProgramCache]: Analyzing trace with hash 321556275, now seen corresponding path program 1 times [2020-10-13 14:54:54,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:54,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565183162] [2020-10-13 14:54:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:59,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:54:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:59,762 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:54:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:54:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:59,799 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 14:54:59,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565183162] [2020-10-13 14:54:59,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:59,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:54:59,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178257505] [2020-10-13 14:54:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:54:59,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:54:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:54:59,801 INFO L87 Difference]: Start difference. First operand 10287 states and 15137 transitions. Second operand 4 states. [2020-10-13 14:55:00,049 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 14:55:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:02,452 INFO L93 Difference]: Finished difference Result 18193 states and 26859 transitions. [2020-10-13 14:55:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:02,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-13 14:55:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:02,465 INFO L225 Difference]: With dead ends: 18193 [2020-10-13 14:55:02,465 INFO L226 Difference]: Without dead ends: 9815 [2020-10-13 14:55:02,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2020-10-13 14:55:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 9813. [2020-10-13 14:55:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9813 states. [2020-10-13 14:55:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 14442 transitions. [2020-10-13 14:55:02,896 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 14442 transitions. Word has length 178 [2020-10-13 14:55:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:02,897 INFO L479 AbstractCegarLoop]: Abstraction has 9813 states and 14442 transitions. [2020-10-13 14:55:02,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 14442 transitions. [2020-10-13 14:55:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 14:55:02,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:02,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:02,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:55:02,904 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash -411513587, now seen corresponding path program 1 times [2020-10-13 14:55:02,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:02,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594520591] [2020-10-13 14:55:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:07,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 14:55:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-13 14:55:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:55:07,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 14:55:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:55:07,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:08,182 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:08,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:08,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:55:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:08,221 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 14:55:08,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594520591] [2020-10-13 14:55:08,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:08,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:08,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875443188] [2020-10-13 14:55:08,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:08,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:08,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:08,223 INFO L87 Difference]: Start difference. First operand 9813 states and 14442 transitions. Second operand 4 states. [2020-10-13 14:55:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:10,466 INFO L93 Difference]: Finished difference Result 13145 states and 19404 transitions. [2020-10-13 14:55:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:55:10,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-13 14:55:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:10,472 INFO L225 Difference]: With dead ends: 13145 [2020-10-13 14:55:10,472 INFO L226 Difference]: Without dead ends: 5241 [2020-10-13 14:55:10,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2020-10-13 14:55:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 5239. [2020-10-13 14:55:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2020-10-13 14:55:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7646 transitions. [2020-10-13 14:55:10,702 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7646 transitions. Word has length 179 [2020-10-13 14:55:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:10,703 INFO L479 AbstractCegarLoop]: Abstraction has 5239 states and 7646 transitions. [2020-10-13 14:55:10,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7646 transitions. [2020-10-13 14:55:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 14:55:10,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:10,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:10,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:55:10,707 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1050668612, now seen corresponding path program 1 times [2020-10-13 14:55:10,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:10,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501287874] [2020-10-13 14:55:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 14:55:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:55:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:15,980 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:15,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:55:15,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:15,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:15,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:16,020 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 14:55:16,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501287874] [2020-10-13 14:55:16,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:16,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:16,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655481855] [2020-10-13 14:55:16,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:16,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:16,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:16,022 INFO L87 Difference]: Start difference. First operand 5239 states and 7646 transitions. Second operand 4 states. [2020-10-13 14:55:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:17,797 INFO L93 Difference]: Finished difference Result 6808 states and 9966 transitions. [2020-10-13 14:55:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:55:17,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-13 14:55:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:17,802 INFO L225 Difference]: With dead ends: 6808 [2020-10-13 14:55:17,802 INFO L226 Difference]: Without dead ends: 2965 [2020-10-13 14:55:17,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-10-13 14:55:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2020-10-13 14:55:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-13 14:55:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4286 transitions. [2020-10-13 14:55:17,938 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4286 transitions. Word has length 179 [2020-10-13 14:55:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:17,939 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 4286 transitions. [2020-10-13 14:55:17,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4286 transitions. [2020-10-13 14:55:17,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 14:55:17,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:17,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:17,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:55:17,941 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1907485106, now seen corresponding path program 1 times [2020-10-13 14:55:17,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:17,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145238609] [2020-10-13 14:55:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 14:55:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:55:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-10-13 14:55:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 14:55:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:55:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:55:20,158 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:20,198 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 14:55:20,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145238609] [2020-10-13 14:55:20,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:20,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:55:20,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232432720] [2020-10-13 14:55:20,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:55:20,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:55:20,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:55:20,199 INFO L87 Difference]: Start difference. First operand 2963 states and 4286 transitions. Second operand 4 states. [2020-10-13 14:55:20,437 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 14:55:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:22,290 INFO L93 Difference]: Finished difference Result 5975 states and 8717 transitions. [2020-10-13 14:55:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:55:22,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-13 14:55:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:22,297 INFO L225 Difference]: With dead ends: 5975 [2020-10-13 14:55:22,297 INFO L226 Difference]: Without dead ends: 4655 [2020-10-13 14:55:22,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2020-10-13 14:55:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 4233. [2020-10-13 14:55:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4233 states. [2020-10-13 14:55:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 6122 transitions. [2020-10-13 14:55:22,501 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 6122 transitions. Word has length 180 [2020-10-13 14:55:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:22,502 INFO L479 AbstractCegarLoop]: Abstraction has 4233 states and 6122 transitions. [2020-10-13 14:55:22,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:55:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 6122 transitions. [2020-10-13 14:55:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 14:55:22,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:22,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:22,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:55:22,505 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1016036192, now seen corresponding path program 1 times [2020-10-13 14:55:22,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:22,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198423021] [2020-10-13 14:55:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:23,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 14:55:23,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:55:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:23,613 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:23,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:23,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:23,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:23,647 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 14:55:23,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198423021] [2020-10-13 14:55:23,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:23,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:23,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745426833] [2020-10-13 14:55:23,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:55:23,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:23,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:55:23,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:55:23,650 INFO L87 Difference]: Start difference. First operand 4233 states and 6122 transitions. Second operand 5 states. [2020-10-13 14:55:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:25,872 INFO L93 Difference]: Finished difference Result 6034 states and 8742 transitions. [2020-10-13 14:55:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:55:25,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-13 14:55:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:25,880 INFO L225 Difference]: With dead ends: 6034 [2020-10-13 14:55:25,880 INFO L226 Difference]: Without dead ends: 6032 [2020-10-13 14:55:25,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2020-10-13 14:55:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 4281. [2020-10-13 14:55:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4281 states. [2020-10-13 14:55:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6170 transitions. [2020-10-13 14:55:26,110 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6170 transitions. Word has length 181 [2020-10-13 14:55:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:26,110 INFO L479 AbstractCegarLoop]: Abstraction has 4281 states and 6170 transitions. [2020-10-13 14:55:26,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:55:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6170 transitions. [2020-10-13 14:55:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 14:55:26,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:26,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:26,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:55:26,114 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1422730719, now seen corresponding path program 1 times [2020-10-13 14:55:26,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:26,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843630671] [2020-10-13 14:55:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:55:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:55:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:27,200 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:55:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:55:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:27,256 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 14:55:27,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843630671] [2020-10-13 14:55:27,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:27,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:55:27,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675218448] [2020-10-13 14:55:27,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:55:27,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:27,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:55:27,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:55:27,257 INFO L87 Difference]: Start difference. First operand 4281 states and 6170 transitions. Second operand 6 states. [2020-10-13 14:55:27,502 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 14:55:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:30,065 INFO L93 Difference]: Finished difference Result 12210 states and 17592 transitions. [2020-10-13 14:55:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:55:30,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-13 14:55:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:30,076 INFO L225 Difference]: With dead ends: 12210 [2020-10-13 14:55:30,076 INFO L226 Difference]: Without dead ends: 8001 [2020-10-13 14:55:30,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:55:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2020-10-13 14:55:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 7999. [2020-10-13 14:55:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2020-10-13 14:55:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 11443 transitions. [2020-10-13 14:55:30,562 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 11443 transitions. Word has length 182 [2020-10-13 14:55:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:30,563 INFO L479 AbstractCegarLoop]: Abstraction has 7999 states and 11443 transitions. [2020-10-13 14:55:30,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:55:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 11443 transitions. [2020-10-13 14:55:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 14:55:30,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:30,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:55:30,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:55:30,568 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1376321921, now seen corresponding path program 1 times [2020-10-13 14:55:30,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:30,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946744393] [2020-10-13 14:55:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 14:55:35,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 14:55:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:35,998 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:55:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:36,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:55:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:55:36,050 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 14:55:36,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946744393] [2020-10-13 14:55:36,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:36,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:55:36,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050660344] [2020-10-13 14:55:36,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:55:36,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:36,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:55:36,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:55:36,052 INFO L87 Difference]: Start difference. First operand 7999 states and 11443 transitions. Second operand 9 states. [2020-10-13 14:55:36,363 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196