/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:04:08,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:04:08,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:04:08,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:04:08,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:04:08,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:04:08,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:04:08,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:04:08,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:04:08,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:04:08,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:04:08,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:04:08,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:04:08,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:04:08,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:04:08,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:04:08,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:04:08,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:04:08,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:04:08,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:04:08,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:04:08,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:04:08,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:04:08,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:04:08,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:04:08,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:04:08,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:04:08,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:04:08,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:04:08,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:04:08,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:04:08,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:04:08,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:04:08,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:04:08,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:04:08,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:04:08,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:04:08,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:04:08,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:04:08,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:04:08,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:04:08,639 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 [2020-10-14 18:04:08,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:04:08,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:04:08,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:04:08,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:04:08,663 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:04:08,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:04:08,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:04:08,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:04:08,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:04:08,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:04:08,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:04:08,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:04:08,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:04:08,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:04:08,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:04:08,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:04:08,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:04:08,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:04:08,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:04:08,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:04:08,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:04:08,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:04:08,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:04:08,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:04:08,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:04:08,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:04:09,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:04:09,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:04:09,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:04:09,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:04:09,009 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i [2020-10-14 18:04:09,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0979673c/c5c52e8487d14947b56b31e0a6eb3a5b/FLAGa5aacf5a0 [2020-10-14 18:04:09,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:04:09,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_two_index_02.i [2020-10-14 18:04:09,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0979673c/c5c52e8487d14947b56b31e0a6eb3a5b/FLAGa5aacf5a0 [2020-10-14 18:04:09,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0979673c/c5c52e8487d14947b56b31e0a6eb3a5b [2020-10-14 18:04:09,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:04:09,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:04:09,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:04:09,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:04:09,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:04:09,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:04:09" (1/1) ... [2020-10-14 18:04:09,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d91f9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:09, skipping insertion in model container [2020-10-14 18:04:09,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:04:09" (1/1) ... [2020-10-14 18:04:09,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:04:09,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:04:10,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:04:10,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:04:10,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:04:10,189 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:04:10,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10 WrapperNode [2020-10-14 18:04:10,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:04:10,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:04:10,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:04:10,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:04:10,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (1/1) ... [2020-10-14 18:04:10,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:04:10,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:04:10,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:04:10,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:04:10,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (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 [2020-10-14 18:04:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:04:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:04:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:04:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:04:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:04:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:04:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:04:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:04:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:04:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:04:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:04:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:04:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:04:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:04:10,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:04:10,624 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:04:10,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:04:10 BoogieIcfgContainer [2020-10-14 18:04:10,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:04:10,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:04:10,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:04:10,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:04:10,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:04:09" (1/3) ... [2020-10-14 18:04:10,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53960a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:04:10, skipping insertion in model container [2020-10-14 18:04:10,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:04:10" (2/3) ... [2020-10-14 18:04:10,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53960a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:04:10, skipping insertion in model container [2020-10-14 18:04:10,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:04:10" (3/3) ... [2020-10-14 18:04:10,637 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_02.i [2020-10-14 18:04:10,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:04:10,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:04:10,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:04:10,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:04:10,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:04:10,721 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:04:10,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:04:10,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:04:10,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:04:10,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:04:10,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:04:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-14 18:04:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:04:10,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:10,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:10,759 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:10,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2020-10-14 18:04:10,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:10,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218199479] [2020-10-14 18:04:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:11,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:11,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:04:11,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 18:04:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:11,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:11,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:04:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:04:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:04:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:11,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:11,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:11,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:04:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:11,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:04:11,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218199479] [2020-10-14 18:04:11,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:04:11,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:04:11,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106530339] [2020-10-14 18:04:11,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:04:11,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:11,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:04:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:04:11,267 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-14 18:04:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:11,402 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2020-10-14 18:04:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:04:11,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 18:04:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:11,415 INFO L225 Difference]: With dead ends: 46 [2020-10-14 18:04:11,415 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 18:04:11,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:04:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 18:04:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 18:04:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 18:04:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 18:04:11,463 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-14 18:04:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:11,463 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 18:04:11,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:04:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 18:04:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 18:04:11,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:11,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:11,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:04:11,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2020-10-14 18:04:11,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:11,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591683832] [2020-10-14 18:04:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:11,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 18:04:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 18:04:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:04:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:04:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:04:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:12,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:12,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:12,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:12,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:04:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:04:12,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591683832] [2020-10-14 18:04:12,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:12,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:04:12,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831091128] [2020-10-14 18:04:12,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:04:12,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:12,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:04:12,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:04:12,485 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2020-10-14 18:04:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:12,708 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-14 18:04:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:04:12,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-14 18:04:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:12,710 INFO L225 Difference]: With dead ends: 35 [2020-10-14 18:04:12,711 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 18:04:12,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:04:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 18:04:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-14 18:04:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:04:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 18:04:12,722 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2020-10-14 18:04:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:12,723 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 18:04:12,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:04:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 18:04:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 18:04:12,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:12,724 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:12,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:04:12,725 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash 334778154, now seen corresponding path program 2 times [2020-10-14 18:04:12,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:12,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205532589] [2020-10-14 18:04:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 18:04:13,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-14 18:04:13,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:04:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:13,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:04:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:13,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:13,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:13,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:04:13,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205532589] [2020-10-14 18:04:13,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:13,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:04:13,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91663582] [2020-10-14 18:04:13,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:04:13,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:13,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:04:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:04:13,477 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-10-14 18:04:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:13,797 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-14 18:04:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:04:13,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-14 18:04:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:13,799 INFO L225 Difference]: With dead ends: 47 [2020-10-14 18:04:13,800 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 18:04:13,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:04:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 18:04:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-14 18:04:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 18:04:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 18:04:13,809 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-10-14 18:04:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:13,809 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 18:04:13,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:04:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 18:04:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 18:04:13,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:13,811 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:13,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:04:13,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:13,812 INFO L82 PathProgramCache]: Analyzing trace with hash -329672603, now seen corresponding path program 3 times [2020-10-14 18:04:13,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:13,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183150587] [2020-10-14 18:04:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 18:04:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 18:04:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:14,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:04:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:04:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:14,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:04:14,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183150587] [2020-10-14 18:04:14,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:14,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:04:14,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222725657] [2020-10-14 18:04:14,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:04:14,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:14,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:04:14,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:04:14,371 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 12 states. [2020-10-14 18:04:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:14,594 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-14 18:04:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:04:14,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-14 18:04:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:14,597 INFO L225 Difference]: With dead ends: 39 [2020-10-14 18:04:14,597 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:04:14,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:04:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:04:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-14 18:04:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 18:04:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 18:04:14,605 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-14 18:04:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:14,605 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 18:04:14,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:04:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 18:04:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 18:04:14,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:14,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:14,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:04:14,607 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash 956525676, now seen corresponding path program 1 times [2020-10-14 18:04:14,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:14,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42830034] [2020-10-14 18:04:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:14,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 18:04:14,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:14,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 18:04:14,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:14,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:04:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 18:04:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 18:04:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:14,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:14,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:14,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:14,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 18:04:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:14,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:14,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:14,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:14,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:14,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42830034] [2020-10-14 18:04:14,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:14,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:04:14,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550542634] [2020-10-14 18:04:14,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:04:14,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:14,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:04:14,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:04:14,808 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-14 18:04:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:14,895 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-14 18:04:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:04:14,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 18:04:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:14,897 INFO L225 Difference]: With dead ends: 52 [2020-10-14 18:04:14,897 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 18:04:14,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:04:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 18:04:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-14 18:04:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:04:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-14 18:04:14,911 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-10-14 18:04:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:14,911 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-14 18:04:14,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:04:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-14 18:04:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:04:14,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:14,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:14,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:04:14,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:14,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1983526027, now seen corresponding path program 2 times [2020-10-14 18:04:14,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:14,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072423055] [2020-10-14 18:04:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:15,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:04:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 18:04:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:15,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:04:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:04:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:15,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:15,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:15,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:15,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:15,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:15,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:04:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:15,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:15,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:15,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072423055] [2020-10-14 18:04:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:15,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:04:15,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796991865] [2020-10-14 18:04:15,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:04:15,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:04:15,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:04:15,744 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 12 states. [2020-10-14 18:04:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:15,976 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-14 18:04:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:04:15,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-14 18:04:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:15,978 INFO L225 Difference]: With dead ends: 46 [2020-10-14 18:04:15,978 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 18:04:15,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:04:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 18:04:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-14 18:04:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 18:04:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 18:04:15,988 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2020-10-14 18:04:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:15,989 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 18:04:15,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:04:15,989 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 18:04:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:04:15,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:15,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:15,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:04:15,992 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1287661272, now seen corresponding path program 3 times [2020-10-14 18:04:15,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:15,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017220764] [2020-10-14 18:04:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:16,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:04:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-14 18:04:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:16,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:04:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:04:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:17,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:17,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:17,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:17,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 18:04:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:17,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:17,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:17,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:17,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:04:17,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:17,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:17,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:17,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:17,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017220764] [2020-10-14 18:04:17,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:17,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:04:17,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535356545] [2020-10-14 18:04:17,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:04:17,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:17,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:04:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:04:17,072 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 13 states. [2020-10-14 18:04:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:17,548 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 18:04:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:04:17,550 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-14 18:04:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:17,552 INFO L225 Difference]: With dead ends: 60 [2020-10-14 18:04:17,552 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 18:04:17,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:04:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 18:04:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-10-14 18:04:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:04:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-14 18:04:17,574 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 27 [2020-10-14 18:04:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:17,575 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-14 18:04:17,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:04:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-14 18:04:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 18:04:17,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:17,577 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:17,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:04:17,577 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:17,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:17,577 INFO L82 PathProgramCache]: Analyzing trace with hash 384747563, now seen corresponding path program 4 times [2020-10-14 18:04:17,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:17,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485901163] [2020-10-14 18:04:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 18:04:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-14 18:04:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:04:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:04:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:18,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:04:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:04:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:18,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485901163] [2020-10-14 18:04:18,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:18,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:04:18,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013156177] [2020-10-14 18:04:18,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:04:18,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:04:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:04:18,814 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 14 states. [2020-10-14 18:04:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:19,128 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-14 18:04:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:04:19,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-14 18:04:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:19,130 INFO L225 Difference]: With dead ends: 59 [2020-10-14 18:04:19,131 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 18:04:19,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:04:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 18:04:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-14 18:04:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 18:04:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-14 18:04:19,149 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 28 [2020-10-14 18:04:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:19,149 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-14 18:04:19,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:04:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-14 18:04:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:04:19,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:19,152 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:19,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:04:19,152 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:19,153 INFO L82 PathProgramCache]: Analyzing trace with hash 689813896, now seen corresponding path program 5 times [2020-10-14 18:04:19,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:19,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070345833] [2020-10-14 18:04:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:20,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:04:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-14 18:04:20,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:20,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:04:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:04:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:20,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:20,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:20,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:20,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:20,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:04:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:04:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:20,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:20,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:20,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:04:20,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:20,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:20,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070345833] [2020-10-14 18:04:20,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:20,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:04:20,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990455343] [2020-10-14 18:04:20,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:04:20,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:20,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:04:20,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:04:20,350 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 15 states. [2020-10-14 18:04:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:20,904 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-14 18:04:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:04:20,905 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-10-14 18:04:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:20,910 INFO L225 Difference]: With dead ends: 61 [2020-10-14 18:04:20,910 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 18:04:20,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:04:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 18:04:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 43. [2020-10-14 18:04:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 18:04:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-14 18:04:20,939 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 29 [2020-10-14 18:04:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:20,939 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-14 18:04:20,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:04:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-14 18:04:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:04:20,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:20,944 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:20,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:04:20,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1556935627, now seen corresponding path program 6 times [2020-10-14 18:04:20,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:20,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377960418] [2020-10-14 18:04:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:22,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:04:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-14 18:04:22,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:22,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:04:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:22,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:04:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:22,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:22,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:22,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:04:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:04:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:22,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:04:22,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377960418] [2020-10-14 18:04:22,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:22,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:04:22,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438515926] [2020-10-14 18:04:22,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:04:22,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:22,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:04:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:04:22,833 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 16 states. [2020-10-14 18:04:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:23,181 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-10-14 18:04:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:04:23,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2020-10-14 18:04:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:23,183 INFO L225 Difference]: With dead ends: 55 [2020-10-14 18:04:23,183 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 18:04:23,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:04:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 18:04:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2020-10-14 18:04:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 18:04:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-14 18:04:23,205 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2020-10-14 18:04:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:23,208 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-14 18:04:23,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:04:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-14 18:04:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 18:04:23,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:23,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:23,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:04:23,212 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1993467674, now seen corresponding path program 7 times [2020-10-14 18:04:23,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:23,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146535415] [2020-10-14 18:04:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 18:04:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 18:04:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:04:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:04:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 18:04:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:04:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:04:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:23,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:23,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 18:04:23,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146535415] [2020-10-14 18:04:23,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:23,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:04:23,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895038061] [2020-10-14 18:04:23,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:04:23,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:04:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:04:23,578 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-10-14 18:04:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:23,682 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-10-14 18:04:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:04:23,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 18:04:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:23,684 INFO L225 Difference]: With dead ends: 69 [2020-10-14 18:04:23,685 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 18:04:23,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:04:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 18:04:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-14 18:04:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:04:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-14 18:04:23,696 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2020-10-14 18:04:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:23,696 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-14 18:04:23,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:04:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-14 18:04:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 18:04:23,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:23,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:23,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:04:23,704 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:23,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1901177605, now seen corresponding path program 8 times [2020-10-14 18:04:23,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:23,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462765584] [2020-10-14 18:04:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 18:04:24,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-14 18:04:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:24,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:04:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:04:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:24,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:04:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:24,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:24,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:04:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:24,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:24,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:04:24,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462765584] [2020-10-14 18:04:24,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:24,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:04:24,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307319607] [2020-10-14 18:04:24,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:04:24,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:04:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:04:24,856 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 14 states. [2020-10-14 18:04:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:25,165 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 18:04:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:04:25,166 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-14 18:04:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:25,167 INFO L225 Difference]: With dead ends: 58 [2020-10-14 18:04:25,167 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 18:04:25,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:04:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 18:04:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-14 18:04:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:04:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-14 18:04:25,187 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 35 [2020-10-14 18:04:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:25,188 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-14 18:04:25,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:04:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-14 18:04:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:04:25,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:25,191 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:25,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:04:25,191 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:25,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1632687254, now seen corresponding path program 9 times [2020-10-14 18:04:25,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:25,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439242510] [2020-10-14 18:04:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:25,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:26,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:26,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:04:26,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-14 18:04:26,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:26,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:04:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:04:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:26,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:26,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 18:04:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:04:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:26,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:04:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:26,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:04:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:04:26,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439242510] [2020-10-14 18:04:26,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:26,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:04:26,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501388756] [2020-10-14 18:04:26,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:04:26,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:26,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:04:26,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:04:26,520 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 15 states. [2020-10-14 18:04:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:27,032 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 18:04:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:04:27,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 18:04:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:27,034 INFO L225 Difference]: With dead ends: 76 [2020-10-14 18:04:27,034 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 18:04:27,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:04:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 18:04:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-10-14 18:04:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 18:04:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-14 18:04:27,047 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 36 [2020-10-14 18:04:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:27,047 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-14 18:04:27,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:04:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-14 18:04:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 18:04:27,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:27,048 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:27,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:04:27,049 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash 486651813, now seen corresponding path program 10 times [2020-10-14 18:04:27,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:27,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996118592] [2020-10-14 18:04:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:28,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:04:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-14 18:04:28,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:28,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:04:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:04:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:28,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:28,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:28,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:28,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:28,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:28,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:04:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:28,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:28,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:28,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:04:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:28,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:28,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:28,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:28,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 18:04:28,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996118592] [2020-10-14 18:04:28,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:28,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:04:28,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008897881] [2020-10-14 18:04:28,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:04:28,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:28,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:04:28,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:04:28,696 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 16 states. [2020-10-14 18:04:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:29,177 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-14 18:04:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:04:29,178 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 18:04:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:29,179 INFO L225 Difference]: With dead ends: 63 [2020-10-14 18:04:29,179 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 18:04:29,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:04:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 18:04:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2020-10-14 18:04:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 18:04:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 18:04:29,189 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2020-10-14 18:04:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:29,189 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 18:04:29,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:04:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 18:04:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 18:04:29,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:29,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:29,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:04:29,190 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2110438100, now seen corresponding path program 11 times [2020-10-14 18:04:29,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:29,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360818597] [2020-10-14 18:04:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:04:29,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 18:04:29,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 18:04:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:29,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:29,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:04:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:29,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:04:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:04:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:29,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:29,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 18:04:29,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360818597] [2020-10-14 18:04:29,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:29,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:04:29,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111384369] [2020-10-14 18:04:29,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:04:29,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:29,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:04:29,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:04:29,716 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 7 states. [2020-10-14 18:04:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:29,802 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-14 18:04:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:04:29,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-14 18:04:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:29,805 INFO L225 Difference]: With dead ends: 86 [2020-10-14 18:04:29,805 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 18:04:29,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:04:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 18:04:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-10-14 18:04:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 18:04:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 18:04:29,824 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2020-10-14 18:04:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:29,825 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 18:04:29,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:04:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 18:04:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:04:29,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:29,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:29,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:04:29,826 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1111945397, now seen corresponding path program 12 times [2020-10-14 18:04:29,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:29,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460231966] [2020-10-14 18:04:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 18:04:31,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-14 18:04:31,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:04:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:04:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:31,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:31,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:31,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:31,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:31,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:04:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:31,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:04:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:04:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:31,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:31,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:04:31,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460231966] [2020-10-14 18:04:31,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:31,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:04:31,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79264507] [2020-10-14 18:04:31,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:04:31,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:31,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:04:31,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:04:31,361 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 16 states. [2020-10-14 18:04:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:31,895 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-10-14 18:04:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:04:31,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 18:04:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:31,903 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:04:31,904 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 18:04:31,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:04:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 18:04:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-14 18:04:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 18:04:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-10-14 18:04:31,926 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 44 [2020-10-14 18:04:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:31,927 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-10-14 18:04:31,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:04:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-10-14 18:04:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:04:31,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:31,931 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:31,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:04:31,931 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:31,931 INFO L82 PathProgramCache]: Analyzing trace with hash -915148056, now seen corresponding path program 13 times [2020-10-14 18:04:31,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:31,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704640372] [2020-10-14 18:04:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:04:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:04:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:33,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 18:04:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:33,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:04:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:33,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:33,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:04:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:33,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:33,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:33,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:33,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:33,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:04:33,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704640372] [2020-10-14 18:04:33,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:33,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:04:33,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461034764] [2020-10-14 18:04:33,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:04:33,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:33,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:04:33,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:04:33,664 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 17 states. [2020-10-14 18:04:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:34,214 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-10-14 18:04:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:04:34,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-14 18:04:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:34,216 INFO L225 Difference]: With dead ends: 87 [2020-10-14 18:04:34,216 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:04:34,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:04:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:04:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2020-10-14 18:04:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:04:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 18:04:34,242 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 45 [2020-10-14 18:04:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:34,242 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 18:04:34,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:04:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 18:04:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 18:04:34,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:34,243 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:34,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:04:34,244 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 890602219, now seen corresponding path program 14 times [2020-10-14 18:04:34,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:34,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163674046] [2020-10-14 18:04:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:35,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:35,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:04:35,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:35,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-10-14 18:04:35,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:35,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:04:35,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:35,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:04:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:36,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:36,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:04:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:36,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:36,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:04:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:36,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:36,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:36,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:36,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:36,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:36,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:36,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:36,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:36,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 18:04:36,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163674046] [2020-10-14 18:04:36,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:36,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:04:36,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549695805] [2020-10-14 18:04:36,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:04:36,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:04:36,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:04:36,379 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 18 states. [2020-10-14 18:04:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:36,968 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-14 18:04:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:04:36,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-14 18:04:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:36,973 INFO L225 Difference]: With dead ends: 75 [2020-10-14 18:04:36,973 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:04:36,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:04:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:04:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-10-14 18:04:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 18:04:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-14 18:04:36,984 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 46 [2020-10-14 18:04:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:36,984 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-14 18:04:36,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:04:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-14 18:04:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 18:04:36,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:36,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:36,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:04:36,985 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:36,986 INFO L82 PathProgramCache]: Analyzing trace with hash 554149414, now seen corresponding path program 15 times [2020-10-14 18:04:36,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:36,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045030320] [2020-10-14 18:04:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:04:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:04:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:37,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:37,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:04:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:37,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:37,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:04:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:37,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:37,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:04:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:04:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:04:37,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045030320] [2020-10-14 18:04:37,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:37,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:04:37,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847769493] [2020-10-14 18:04:37,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:04:37,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:04:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:04:37,810 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-10-14 18:04:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:37,930 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-10-14 18:04:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:04:37,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-14 18:04:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:37,932 INFO L225 Difference]: With dead ends: 103 [2020-10-14 18:04:37,932 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 18:04:37,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:04:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 18:04:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-14 18:04:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 18:04:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-14 18:04:37,942 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2020-10-14 18:04:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:37,942 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-14 18:04:37,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:04:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-14 18:04:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 18:04:37,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:37,943 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:37,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:04:37,943 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1433273787, now seen corresponding path program 16 times [2020-10-14 18:04:37,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:37,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404301644] [2020-10-14 18:04:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:39,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:39,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 18:04:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-10-14 18:04:39,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:39,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:04:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:04:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 18:04:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:04:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:40,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:04:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:40,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:40,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:04:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:04:40,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404301644] [2020-10-14 18:04:40,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:40,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:04:40,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636598524] [2020-10-14 18:04:40,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:04:40,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:04:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:04:40,104 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 18 states. [2020-10-14 18:04:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:40,860 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-14 18:04:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:04:40,864 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-10-14 18:04:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:40,865 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:04:40,865 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 18:04:40,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:04:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 18:04:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-14 18:04:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 18:04:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-14 18:04:40,889 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 53 [2020-10-14 18:04:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:40,891 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-14 18:04:40,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:04:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-14 18:04:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:04:40,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:40,892 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:40,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:04:40,892 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:40,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1471158186, now seen corresponding path program 17 times [2020-10-14 18:04:40,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:40,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988647725] [2020-10-14 18:04:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:04:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:04:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:04:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:04:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:04:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:04:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:42,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:04:42,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988647725] [2020-10-14 18:04:42,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:42,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:04:42,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776896367] [2020-10-14 18:04:42,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:04:42,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:42,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:04:42,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:04:42,816 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 19 states. [2020-10-14 18:04:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:43,787 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-10-14 18:04:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:04:43,788 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-14 18:04:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:43,789 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:04:43,789 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 18:04:43,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:04:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 18:04:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 77. [2020-10-14 18:04:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 18:04:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-14 18:04:43,809 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 54 [2020-10-14 18:04:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:43,810 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-14 18:04:43,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:04:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-14 18:04:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 18:04:43,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:43,811 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:43,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:04:43,811 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1314236133, now seen corresponding path program 18 times [2020-10-14 18:04:43,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:43,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138172899] [2020-10-14 18:04:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:43,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 18:04:45,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1687 [2020-10-14 18:04:45,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:04:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:04:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:45,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:45,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:04:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:04:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:45,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:04:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:04:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:45,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:04:45,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138172899] [2020-10-14 18:04:45,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:45,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:04:45,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28005680] [2020-10-14 18:04:45,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:04:45,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:04:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:04:45,970 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 20 states. [2020-10-14 18:04:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:46,762 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-14 18:04:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:04:46,766 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 18:04:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:46,768 INFO L225 Difference]: With dead ends: 87 [2020-10-14 18:04:46,768 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:04:46,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:04:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:04:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-14 18:04:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 18:04:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-14 18:04:46,793 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 55 [2020-10-14 18:04:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:46,793 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-14 18:04:46,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:04:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-14 18:04:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:04:46,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:46,801 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:46,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:04:46,802 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -702984724, now seen corresponding path program 19 times [2020-10-14 18:04:46,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:46,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419886981] [2020-10-14 18:04:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:04:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 18:04:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:04:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 18:04:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:47,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:04:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:04:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:47,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:04:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:47,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:47,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:04:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:47,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:04:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 18:04:47,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419886981] [2020-10-14 18:04:47,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:47,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:04:47,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080242453] [2020-10-14 18:04:47,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:04:47,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:47,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:04:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:04:47,725 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2020-10-14 18:04:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:47,853 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-10-14 18:04:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:04:47,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 18:04:47,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:47,855 INFO L225 Difference]: With dead ends: 120 [2020-10-14 18:04:47,855 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 18:04:47,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:04:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 18:04:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-14 18:04:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:04:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-14 18:04:47,866 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 60 [2020-10-14 18:04:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:47,866 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-14 18:04:47,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:04:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-14 18:04:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 18:04:47,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:47,867 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:47,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:04:47,867 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:47,868 INFO L82 PathProgramCache]: Analyzing trace with hash 421403147, now seen corresponding path program 20 times [2020-10-14 18:04:47,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:47,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601595656] [2020-10-14 18:04:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:47,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2578 [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:04:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:04:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:04:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:50,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:04:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:04:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:04:50,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:04:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:50,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:50,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:04:50,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601595656] [2020-10-14 18:04:50,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:50,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:04:50,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432102778] [2020-10-14 18:04:50,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:04:50,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:04:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:04:50,952 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 20 states. [2020-10-14 18:04:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:51,731 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2020-10-14 18:04:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:04:51,732 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-14 18:04:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:51,733 INFO L225 Difference]: With dead ends: 94 [2020-10-14 18:04:51,733 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 18:04:51,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:04:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 18:04:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-14 18:04:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:04:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-10-14 18:04:51,748 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 62 [2020-10-14 18:04:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:51,749 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-10-14 18:04:51,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:04:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-10-14 18:04:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:04:51,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:51,749 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:51,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:04:51,750 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1723595944, now seen corresponding path program 21 times [2020-10-14 18:04:51,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:51,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224985629] [2020-10-14 18:04:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:04:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:04:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:54,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:54,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:04:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:54,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:54,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:04:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:04:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:04:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:54,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:04:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:04:54,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224985629] [2020-10-14 18:04:54,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:54,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:04:54,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010795145] [2020-10-14 18:04:54,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:04:54,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:04:54,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:04:54,773 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 21 states. [2020-10-14 18:04:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:55,600 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-14 18:04:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:04:55,601 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-14 18:04:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:55,602 INFO L225 Difference]: With dead ends: 117 [2020-10-14 18:04:55,602 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:04:55,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:04:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:04:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2020-10-14 18:04:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 18:04:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-14 18:04:55,624 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 63 [2020-10-14 18:04:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:55,624 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-14 18:04:55,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:04:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-14 18:04:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 18:04:55,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:55,625 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:55,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:04:55,625 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash -858100309, now seen corresponding path program 22 times [2020-10-14 18:04:55,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:55,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631750113] [2020-10-14 18:04:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:04:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:04:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2870 [2020-10-14 18:04:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:04:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:04:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:04:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:04:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:04:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:04:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:58,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:04:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:04:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:04:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:04:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:04:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:04:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:04:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:04:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:04:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:04:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 10 proven. 76 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:04:58,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631750113] [2020-10-14 18:04:58,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:04:58,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:04:58,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536715172] [2020-10-14 18:04:58,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:04:58,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:04:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:04:58,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:04:58,950 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 22 states. [2020-10-14 18:04:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:04:59,946 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-10-14 18:04:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:04:59,946 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-14 18:04:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:04:59,947 INFO L225 Difference]: With dead ends: 99 [2020-10-14 18:04:59,947 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 18:04:59,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:04:59,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 18:04:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2020-10-14 18:04:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:04:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-14 18:04:59,959 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 64 [2020-10-14 18:04:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:04:59,959 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-14 18:04:59,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:04:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-14 18:04:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 18:04:59,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:04:59,960 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:04:59,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:04:59,960 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:04:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:04:59,961 INFO L82 PathProgramCache]: Analyzing trace with hash -828046490, now seen corresponding path program 23 times [2020-10-14 18:04:59,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:04:59,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596179059] [2020-10-14 18:04:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:04:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:04:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:04:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:05:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:05:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:01,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:05:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:01,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:05:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:05:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:05:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:05:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:05:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-14 18:05:01,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596179059] [2020-10-14 18:05:01,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:01,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:05:01,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836494124] [2020-10-14 18:05:01,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:05:01,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:01,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:05:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:05:01,204 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 10 states. [2020-10-14 18:05:01,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:01,301 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2020-10-14 18:05:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:05:01,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-14 18:05:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:01,302 INFO L225 Difference]: With dead ends: 132 [2020-10-14 18:05:01,302 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:05:01,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:05:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:05:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-14 18:05:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 18:05:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-14 18:05:01,313 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 69 [2020-10-14 18:05:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:01,314 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-14 18:05:01,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:05:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-14 18:05:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 18:05:01,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:01,315 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:01,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:05:01,315 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:01,315 INFO L82 PathProgramCache]: Analyzing trace with hash 311850122, now seen corresponding path program 24 times [2020-10-14 18:05:01,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:01,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990717232] [2020-10-14 18:05:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:05:02,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:02,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:05:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:02,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 18:05:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:05:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:05:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:05:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:02,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:05:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:05:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-14 18:05:02,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990717232] [2020-10-14 18:05:02,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:02,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:05:02,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689969001] [2020-10-14 18:05:02,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:05:02,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:02,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:05:02,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:05:02,751 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 10 states. [2020-10-14 18:05:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:02,893 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-10-14 18:05:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:05:02,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-14 18:05:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:02,895 INFO L225 Difference]: With dead ends: 129 [2020-10-14 18:05:02,895 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 18:05:02,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:05:02,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 18:05:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-10-14 18:05:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 18:05:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-14 18:05:02,906 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 70 [2020-10-14 18:05:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:02,907 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-14 18:05:02,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:05:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-14 18:05:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 18:05:02,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:02,908 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:02,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:05:02,908 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash 525998469, now seen corresponding path program 25 times [2020-10-14 18:05:02,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:02,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736182741] [2020-10-14 18:05:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 18:05:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-10-14 18:05:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:05:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 18:05:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:05,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:05:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:05:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:05:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:05:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:05:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:05:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:05:05,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736182741] [2020-10-14 18:05:05,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:05,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:05:05,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907387337] [2020-10-14 18:05:05,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:05:05,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:05,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:05:05,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:05:05,836 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 22 states. [2020-10-14 18:05:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:06,728 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-10-14 18:05:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:05:06,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-14 18:05:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:06,732 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:05:06,732 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 18:05:06,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:05:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 18:05:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-14 18:05:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:05:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2020-10-14 18:05:06,755 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 71 [2020-10-14 18:05:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:06,755 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2020-10-14 18:05:06,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:05:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2020-10-14 18:05:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:05:06,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:06,757 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:06,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:05:06,757 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1425337366, now seen corresponding path program 26 times [2020-10-14 18:05:06,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:06,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792128607] [2020-10-14 18:05:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:05:10,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3691 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 18:05:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 18:05:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:05:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:05:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:05:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:05:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:05:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 93 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:05:10,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792128607] [2020-10-14 18:05:10,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:10,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:05:10,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011162852] [2020-10-14 18:05:10,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:05:10,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:10,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:05:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:05:10,999 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 23 states. [2020-10-14 18:05:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:12,167 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-14 18:05:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:05:12,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-14 18:05:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:12,169 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:05:12,169 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:05:12,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:05:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:05:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2020-10-14 18:05:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 18:05:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-14 18:05:12,189 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 72 [2020-10-14 18:05:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:12,189 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-14 18:05:12,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:05:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-14 18:05:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:05:12,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:12,191 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:12,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:05:12,191 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1787206107, now seen corresponding path program 27 times [2020-10-14 18:05:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:12,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347612637] [2020-10-14 18:05:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:05:15,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3228 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:05:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:05:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:05:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:05:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:05:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:05:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:05:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:15,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 18:05:15,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347612637] [2020-10-14 18:05:15,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:15,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:05:15,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559328500] [2020-10-14 18:05:15,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:05:15,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:05:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:05:15,970 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 24 states. [2020-10-14 18:05:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:17,167 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-14 18:05:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:05:17,167 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 73 [2020-10-14 18:05:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:17,168 INFO L225 Difference]: With dead ends: 111 [2020-10-14 18:05:17,168 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:05:17,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:05:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:05:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2020-10-14 18:05:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 18:05:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-14 18:05:17,182 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 73 [2020-10-14 18:05:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:17,182 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-14 18:05:17,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:05:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-14 18:05:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 18:05:17,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:17,183 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:17,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:05:17,183 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 755730092, now seen corresponding path program 28 times [2020-10-14 18:05:17,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606144863] [2020-10-14 18:05:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 18:05:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:05:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:18,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:05:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:05:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:05:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:05:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:05:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:05:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:05:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:18,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:18,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:18,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:18,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 18:05:18,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606144863] [2020-10-14 18:05:18,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:18,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:05:18,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885850809] [2020-10-14 18:05:18,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:05:18,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:05:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:05:18,847 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 11 states. [2020-10-14 18:05:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:19,022 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-10-14 18:05:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:05:19,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-14 18:05:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:19,024 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:05:19,024 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 18:05:19,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:05:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 18:05:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-14 18:05:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 18:05:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-14 18:05:19,037 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 78 [2020-10-14 18:05:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:19,038 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-14 18:05:19,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:05:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-14 18:05:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 18:05:19,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:19,039 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:19,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:05:19,039 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1429908277, now seen corresponding path program 29 times [2020-10-14 18:05:19,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:19,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147018470] [2020-10-14 18:05:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:20,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 18:05:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3719 [2020-10-14 18:05:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:22,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:05:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 18:05:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:05:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:05:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:05:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:05:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:05:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:23,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:05:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:05:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:23,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:23,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:05:23,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147018470] [2020-10-14 18:05:23,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:23,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:05:23,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306114994] [2020-10-14 18:05:23,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:05:23,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:05:23,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:05:23,481 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 24 states. [2020-10-14 18:05:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:24,627 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-14 18:05:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:05:24,628 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-10-14 18:05:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:24,629 INFO L225 Difference]: With dead ends: 118 [2020-10-14 18:05:24,629 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 18:05:24,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:05:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 18:05:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-10-14 18:05:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 18:05:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-10-14 18:05:24,646 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 80 [2020-10-14 18:05:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:24,647 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-10-14 18:05:24,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:05:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-10-14 18:05:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:05:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:24,648 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:24,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:05:24,649 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 914617960, now seen corresponding path program 30 times [2020-10-14 18:05:24,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:24,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842857312] [2020-10-14 18:05:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4373 [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:05:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 18:05:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:05:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:05:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:05:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:05:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:05:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:05:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:05:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:29,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 14 proven. 122 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:05:29,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842857312] [2020-10-14 18:05:29,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:05:29,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050840884] [2020-10-14 18:05:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:05:29,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:29,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:05:29,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:05:29,666 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 25 states. [2020-10-14 18:05:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:30,943 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2020-10-14 18:05:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:05:30,944 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-10-14 18:05:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:30,945 INFO L225 Difference]: With dead ends: 147 [2020-10-14 18:05:30,945 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:05:30,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:05:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:05:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 113. [2020-10-14 18:05:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 18:05:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-14 18:05:30,974 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 81 [2020-10-14 18:05:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:30,975 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-14 18:05:30,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:05:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-14 18:05:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 18:05:30,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:30,977 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:30,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:05:30,977 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 580487275, now seen corresponding path program 31 times [2020-10-14 18:05:30,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:30,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737765205] [2020-10-14 18:05:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:35,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:05:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 18:05:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:05:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:05:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:05:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:05:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:05:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:05:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:05:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:36,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:05:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:36,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-14 18:05:36,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737765205] [2020-10-14 18:05:36,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:36,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:05:36,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042903137] [2020-10-14 18:05:36,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:05:36,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:05:36,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:05:36,791 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 26 states. [2020-10-14 18:05:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:38,129 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2020-10-14 18:05:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:05:38,130 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-14 18:05:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:38,131 INFO L225 Difference]: With dead ends: 123 [2020-10-14 18:05:38,131 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 18:05:38,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:05:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 18:05:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2020-10-14 18:05:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:05:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-14 18:05:38,146 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 82 [2020-10-14 18:05:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:38,146 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-14 18:05:38,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:05:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-14 18:05:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 18:05:38,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:38,147 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:38,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:05:38,147 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:38,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1344942246, now seen corresponding path program 32 times [2020-10-14 18:05:38,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:38,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618637706] [2020-10-14 18:05:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 18:05:40,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2339 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:05:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:40,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:05:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:40,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:05:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:05:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:05:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:05:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:05:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:05:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:05:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-14 18:05:40,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618637706] [2020-10-14 18:05:40,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:40,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:05:40,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594047112] [2020-10-14 18:05:40,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:05:40,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:40,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:05:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:05:40,608 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-10-14 18:05:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:40,746 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2020-10-14 18:05:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:05:40,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-14 18:05:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:40,749 INFO L225 Difference]: With dead ends: 166 [2020-10-14 18:05:40,749 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 18:05:40,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:05:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 18:05:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-14 18:05:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:05:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-14 18:05:40,767 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2020-10-14 18:05:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:40,767 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-14 18:05:40,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:05:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-14 18:05:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:05:40,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:40,768 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:40,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:05:40,769 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:40,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:40,769 INFO L82 PathProgramCache]: Analyzing trace with hash -84467510, now seen corresponding path program 33 times [2020-10-14 18:05:40,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:40,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696394373] [2020-10-14 18:05:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:05:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:05:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:05:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:43,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:43,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 18:05:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:43,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:05:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:05:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:05:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:05:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:05:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:05:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:05:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:43,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:43,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-14 18:05:43,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696394373] [2020-10-14 18:05:43,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:43,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:05:43,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464805224] [2020-10-14 18:05:43,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:05:43,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:43,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:05:43,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:05:43,696 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 12 states. [2020-10-14 18:05:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:43,911 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-10-14 18:05:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:05:43,912 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-14 18:05:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:43,913 INFO L225 Difference]: With dead ends: 161 [2020-10-14 18:05:43,913 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 18:05:43,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:05:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 18:05:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-14 18:05:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 18:05:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-14 18:05:43,928 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 88 [2020-10-14 18:05:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:43,928 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-14 18:05:43,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:05:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-14 18:05:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 18:05:43,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:43,929 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:43,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:05:43,930 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1278342971, now seen corresponding path program 34 times [2020-10-14 18:05:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:43,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967807572] [2020-10-14 18:05:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:05:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:49,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:49,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:05:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:05:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:05:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:05:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:05:49,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:05:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:05:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:05:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:05:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:49,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:49,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:49,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:05:49,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:49,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:05:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:05:49,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967807572] [2020-10-14 18:05:49,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:49,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:05:49,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567705543] [2020-10-14 18:05:49,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:05:49,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:49,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:05:49,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:05:49,829 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 26 states. [2020-10-14 18:05:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:51,212 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2020-10-14 18:05:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:05:51,213 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 89 [2020-10-14 18:05:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:51,214 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:05:51,214 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:05:51,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:05:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:05:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-14 18:05:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 18:05:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2020-10-14 18:05:51,234 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 89 [2020-10-14 18:05:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:51,235 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2020-10-14 18:05:51,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:05:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2020-10-14 18:05:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:05:51,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:51,236 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:51,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:05:51,236 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:51,237 INFO L82 PathProgramCache]: Analyzing trace with hash 366223402, now seen corresponding path program 35 times [2020-10-14 18:05:51,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:51,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270844173] [2020-10-14 18:05:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:05:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:05:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 18:05:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:05:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:05:56,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:05:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:05:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:05:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:05:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:05:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:05:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:05:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:05:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:05:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:05:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:05:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:05:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:05:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:05:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 155 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:05:56,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270844173] [2020-10-14 18:05:56,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:05:56,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:05:56,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377296734] [2020-10-14 18:05:56,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:05:56,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:05:56,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:05:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:05:56,999 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand 27 states. [2020-10-14 18:05:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:05:58,689 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2020-10-14 18:05:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:05:58,697 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 90 [2020-10-14 18:05:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:05:58,698 INFO L225 Difference]: With dead ends: 165 [2020-10-14 18:05:58,699 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 18:05:58,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:05:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 18:05:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2020-10-14 18:05:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 18:05:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-10-14 18:05:58,721 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 90 [2020-10-14 18:05:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:05:58,722 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-10-14 18:05:58,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:05:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-10-14 18:05:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:05:58,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:05:58,725 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:05:58,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:05:58,726 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:05:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:05:58,726 INFO L82 PathProgramCache]: Analyzing trace with hash -191826587, now seen corresponding path program 36 times [2020-10-14 18:05:58,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:05:58,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321668591] [2020-10-14 18:05:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:05:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:05:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:05:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:03,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:06:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:06:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:06:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:06:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:06:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:06:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:06:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:06:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:06:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:04,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:06:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:04,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 16 proven. 166 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 18:06:04,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321668591] [2020-10-14 18:06:04,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:04,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:06:04,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978464494] [2020-10-14 18:06:04,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:06:04,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:04,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:06:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:06:04,739 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 28 states. [2020-10-14 18:06:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:06,451 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-14 18:06:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:06:06,455 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-14 18:06:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:06,457 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:06:06,457 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:06:06,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:06:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:06:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2020-10-14 18:06:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 18:06:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-14 18:06:06,476 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 91 [2020-10-14 18:06:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:06,477 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-14 18:06:06,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:06:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-14 18:06:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 18:06:06,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:06,478 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:06,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:06:06,478 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1919414124, now seen corresponding path program 37 times [2020-10-14 18:06:06,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:06,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926596661] [2020-10-14 18:06:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 18:06:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3548 [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:06:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:10,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 18:06:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:06:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:06:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:06:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:06:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:06:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:06:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:06:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:06:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:06:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-14 18:06:10,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926596661] [2020-10-14 18:06:10,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:10,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:06:10,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237267932] [2020-10-14 18:06:10,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:06:10,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:06:10,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:06:10,171 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 13 states. [2020-10-14 18:06:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:10,356 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2020-10-14 18:06:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:06:10,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-14 18:06:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:10,358 INFO L225 Difference]: With dead ends: 183 [2020-10-14 18:06:10,358 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:06:10,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:06:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:06:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-14 18:06:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:06:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-14 18:06:10,376 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 96 [2020-10-14 18:06:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:10,376 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-14 18:06:10,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:06:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-14 18:06:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 18:06:10,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:10,378 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:10,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:06:10,378 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1635575752, now seen corresponding path program 38 times [2020-10-14 18:06:10,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:10,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528913431] [2020-10-14 18:06:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:06:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4100 [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:06:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:06:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:06:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:06:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:06:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:06:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:06:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:06:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:06:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:06:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:14,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-14 18:06:14,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528913431] [2020-10-14 18:06:14,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:14,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:06:14,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286069850] [2020-10-14 18:06:14,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:06:14,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:06:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:06:14,631 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 13 states. [2020-10-14 18:06:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:14,855 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-10-14 18:06:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:06:14,856 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-14 18:06:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:14,858 INFO L225 Difference]: With dead ends: 177 [2020-10-14 18:06:14,858 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 18:06:14,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:06:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 18:06:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-10-14 18:06:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 18:06:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-14 18:06:14,871 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2020-10-14 18:06:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:14,871 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-14 18:06:14,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:06:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-14 18:06:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 18:06:14,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:14,873 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:14,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:06:14,874 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash 134922123, now seen corresponding path program 39 times [2020-10-14 18:06:14,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:14,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891257245] [2020-10-14 18:06:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:14,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:19,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:19,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 18:06:19,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:20,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:06:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:06:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:06:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:06:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:06:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:06:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:06:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:06:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:06:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:20,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:06:20,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891257245] [2020-10-14 18:06:20,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:20,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:06:20,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507608011] [2020-10-14 18:06:20,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:06:20,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:06:20,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:06:20,681 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 28 states. [2020-10-14 18:06:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:22,269 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-10-14 18:06:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:06:22,270 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 98 [2020-10-14 18:06:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:22,273 INFO L225 Difference]: With dead ends: 142 [2020-10-14 18:06:22,273 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 18:06:22,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=1607, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:06:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 18:06:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-14 18:06:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 18:06:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2020-10-14 18:06:22,320 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 98 [2020-10-14 18:06:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:22,324 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2020-10-14 18:06:22,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:06:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2020-10-14 18:06:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:06:22,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:22,326 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:22,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:06:22,327 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 859299880, now seen corresponding path program 40 times [2020-10-14 18:06:22,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:22,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871842011] [2020-10-14 18:06:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:27,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:06:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 18:06:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:28,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:28,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:06:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:06:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:06:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 18:06:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:06:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:06:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:06:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:06:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:06:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:06:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:06:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:28,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:06:28,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871842011] [2020-10-14 18:06:28,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:28,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:06:28,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770960993] [2020-10-14 18:06:28,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:06:28,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:28,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:06:28,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:06:28,185 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand 29 states. [2020-10-14 18:06:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:30,780 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2020-10-14 18:06:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:06:30,780 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 99 [2020-10-14 18:06:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:30,782 INFO L225 Difference]: With dead ends: 181 [2020-10-14 18:06:30,782 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 18:06:30,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=197, Invalid=2665, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:06:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 18:06:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 137. [2020-10-14 18:06:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 18:06:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-10-14 18:06:30,813 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 99 [2020-10-14 18:06:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:30,814 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-10-14 18:06:30,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:06:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-10-14 18:06:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 18:06:30,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:30,815 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:30,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:06:30,815 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:30,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1840173867, now seen corresponding path program 41 times [2020-10-14 18:06:30,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:30,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159407432] [2020-10-14 18:06:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:35,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 18:06:35,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 18:06:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:06:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:06:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:06:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:06:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:06:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:06:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:06:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:06:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:06:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:36,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 18 proven. 204 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 18:06:36,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159407432] [2020-10-14 18:06:36,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:36,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:06:36,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966171296] [2020-10-14 18:06:36,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:06:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:06:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:06:36,902 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 30 states. [2020-10-14 18:06:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:38,769 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-10-14 18:06:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:06:38,770 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100 [2020-10-14 18:06:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:38,771 INFO L225 Difference]: With dead ends: 147 [2020-10-14 18:06:38,771 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:06:38,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=1769, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:06:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:06:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2020-10-14 18:06:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 18:06:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-14 18:06:38,793 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 100 [2020-10-14 18:06:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:38,793 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-14 18:06:38,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:06:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-14 18:06:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:06:38,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:38,794 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:38,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:06:38,794 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:38,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1866781210, now seen corresponding path program 42 times [2020-10-14 18:06:38,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:38,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110826391] [2020-10-14 18:06:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:06:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:06:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:06:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 18:06:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:06:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:06:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:06:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:06:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:06:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:06:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:06:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:06:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:43,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:43,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:43,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-14 18:06:43,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110826391] [2020-10-14 18:06:43,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:43,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:06:43,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725668610] [2020-10-14 18:06:43,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:06:43,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:43,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:06:43,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:06:43,974 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 14 states. [2020-10-14 18:06:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:44,183 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2020-10-14 18:06:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:06:44,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-14 18:06:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:44,185 INFO L225 Difference]: With dead ends: 200 [2020-10-14 18:06:44,185 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:06:44,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:06:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:06:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-14 18:06:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 18:06:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-14 18:06:44,207 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 105 [2020-10-14 18:06:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:44,207 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-14 18:06:44,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:06:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-14 18:06:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 18:06:44,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:44,208 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:44,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:06:44,209 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1210178826, now seen corresponding path program 43 times [2020-10-14 18:06:44,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:44,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005594230] [2020-10-14 18:06:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:06:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:06:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:06:49,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:06:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:06:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:06:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:06:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:06:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:06:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:06:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:06:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:06:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:06:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:06:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:06:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:06:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:49,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:06:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2020-10-14 18:06:49,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005594230] [2020-10-14 18:06:49,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:49,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:06:49,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755557453] [2020-10-14 18:06:49,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:06:49,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:49,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:06:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:06:49,387 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 14 states. [2020-10-14 18:06:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:49,666 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2020-10-14 18:06:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:06:49,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 106 [2020-10-14 18:06:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:49,669 INFO L225 Difference]: With dead ends: 193 [2020-10-14 18:06:49,669 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:06:49,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:06:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:06:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2020-10-14 18:06:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 18:06:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-14 18:06:49,689 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 106 [2020-10-14 18:06:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:49,689 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-14 18:06:49,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:06:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-14 18:06:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 18:06:49,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:49,690 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:49,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:06:49,690 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:49,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:49,691 INFO L82 PathProgramCache]: Analyzing trace with hash -116275195, now seen corresponding path program 44 times [2020-10-14 18:06:49,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:49,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037191551] [2020-10-14 18:06:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 18:06:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 18:06:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:06:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:06:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:06:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:06:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:06:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:06:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:06:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:06:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:06:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:06:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:06:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:06:55,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:06:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:06:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:06:55,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:06:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:06:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:06:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:06:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:06:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:06:55,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037191551] [2020-10-14 18:06:55,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:06:55,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:06:55,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810690693] [2020-10-14 18:06:55,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:06:55,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:06:55,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:06:55,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:06:55,622 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 30 states. [2020-10-14 18:06:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:06:57,568 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-10-14 18:06:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:06:57,568 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 107 [2020-10-14 18:06:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:06:57,570 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:06:57,570 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 18:06:57,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:06:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 18:06:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2020-10-14 18:06:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 18:06:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-10-14 18:06:57,598 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 107 [2020-10-14 18:06:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:06:57,598 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-10-14 18:06:57,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:06:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-10-14 18:06:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:06:57,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:06:57,599 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:06:57,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:06:57,599 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:06:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:06:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1713323114, now seen corresponding path program 45 times [2020-10-14 18:06:57,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:06:57,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729643057] [2020-10-14 18:06:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:06:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:06:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:06:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:02,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:07:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:07:02,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:07:02,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:02,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:07:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 18:07:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:07:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:07:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:07:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:07:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:07:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:07:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:07:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:07:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:07:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:07:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:07:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:07:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 20 proven. 233 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:07:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729643057] [2020-10-14 18:07:03,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:03,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:07:03,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122020927] [2020-10-14 18:07:03,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:07:03,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:03,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:07:03,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:07:03,680 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 31 states. [2020-10-14 18:07:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:06,011 INFO L93 Difference]: Finished difference Result 195 states and 221 transitions. [2020-10-14 18:07:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:07:06,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-14 18:07:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:06,014 INFO L225 Difference]: With dead ends: 195 [2020-10-14 18:07:06,015 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 18:07:06,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:07:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 18:07:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-14 18:07:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 18:07:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-10-14 18:07:06,053 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 108 [2020-10-14 18:07:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:06,053 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-10-14 18:07:06,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:07:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-10-14 18:07:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 18:07:06,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:06,055 INFO L422 BasicCegarLoop]: trace histogram [13, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:06,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:07:06,055 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1698671451, now seen corresponding path program 46 times [2020-10-14 18:07:06,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:06,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091047024] [2020-10-14 18:07:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 18:07:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:07:11,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:07:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:07:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:11,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:11,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:11,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:07:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:07:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:07:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:07:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:07:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:07:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:07:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:07:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:07:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:11,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:11,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-10-14 18:07:11,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091047024] [2020-10-14 18:07:11,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:11,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:07:11,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947186145] [2020-10-14 18:07:11,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:07:11,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:11,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:07:11,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:07:11,261 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 15 states. [2020-10-14 18:07:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:11,554 INFO L93 Difference]: Finished difference Result 281 states and 309 transitions. [2020-10-14 18:07:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:07:11,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-14 18:07:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:11,557 INFO L225 Difference]: With dead ends: 281 [2020-10-14 18:07:11,557 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 18:07:11,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:07:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 18:07:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-14 18:07:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 18:07:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2020-10-14 18:07:11,627 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 109 [2020-10-14 18:07:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:11,627 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2020-10-14 18:07:11,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:07:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2020-10-14 18:07:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 18:07:11,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:11,630 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:11,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:07:11,632 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash -751644215, now seen corresponding path program 47 times [2020-10-14 18:07:11,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:11,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414935997] [2020-10-14 18:07:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:11,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:07:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:16,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:07:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:07:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:07:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:07:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:07:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:07:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:07:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:07:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:07:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-10-14 18:07:16,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414935997] [2020-10-14 18:07:16,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:16,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:07:16,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142730430] [2020-10-14 18:07:16,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:07:16,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:07:16,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:07:16,860 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand 16 states. [2020-10-14 18:07:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:17,069 INFO L93 Difference]: Finished difference Result 282 states and 310 transitions. [2020-10-14 18:07:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:07:17,072 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 110 [2020-10-14 18:07:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:17,073 INFO L225 Difference]: With dead ends: 282 [2020-10-14 18:07:17,073 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 18:07:17,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:07:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 18:07:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-14 18:07:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 18:07:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2020-10-14 18:07:17,103 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 110 [2020-10-14 18:07:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:17,103 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2020-10-14 18:07:17,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:07:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2020-10-14 18:07:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 18:07:17,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:17,104 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:17,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:07:17,105 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1458570971, now seen corresponding path program 48 times [2020-10-14 18:07:17,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:17,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172265070] [2020-10-14 18:07:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:07:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:07:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:07:22,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:22,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:07:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:07:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:07:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:07:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:07:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:07:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:07:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:07:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:07:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:07:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:22,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:22,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:22,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-10-14 18:07:22,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172265070] [2020-10-14 18:07:22,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:22,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:07:22,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257606688] [2020-10-14 18:07:22,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:07:22,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:22,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:07:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:07:22,374 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand 17 states. [2020-10-14 18:07:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:22,743 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2020-10-14 18:07:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:07:22,745 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 111 [2020-10-14 18:07:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:22,746 INFO L225 Difference]: With dead ends: 260 [2020-10-14 18:07:22,746 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 18:07:22,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:07:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 18:07:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2020-10-14 18:07:22,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:07:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-14 18:07:22,769 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 111 [2020-10-14 18:07:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:22,770 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-14 18:07:22,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:07:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-14 18:07:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 18:07:22,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:22,771 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:22,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:07:22,771 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1994920026, now seen corresponding path program 49 times [2020-10-14 18:07:22,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:22,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545470400] [2020-10-14 18:07:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:27,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:07:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:07:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:07:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:27,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:27,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:27,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:07:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:27,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:27,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:27,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:27,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:27,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:07:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:27,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:27,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:27,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:07:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:27,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:27,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:27,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:27,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:27,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:27,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:27,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:27,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:27,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:07:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:28,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:07:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:07:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:07:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:07:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:28,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:07:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:28,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:28,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:28,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 20 proven. 105 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-14 18:07:28,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545470400] [2020-10-14 18:07:28,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:28,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:07:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011670558] [2020-10-14 18:07:28,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:07:28,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:28,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:07:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:07:28,044 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 18 states. [2020-10-14 18:07:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:28,438 INFO L93 Difference]: Finished difference Result 229 states and 239 transitions. [2020-10-14 18:07:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:07:28,439 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-14 18:07:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:28,440 INFO L225 Difference]: With dead ends: 229 [2020-10-14 18:07:28,440 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 18:07:28,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:07:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 18:07:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 118. [2020-10-14 18:07:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 18:07:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-14 18:07:28,464 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 113 [2020-10-14 18:07:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:28,464 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-14 18:07:28,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:07:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-14 18:07:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 18:07:28,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:28,465 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:28,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:07:28,466 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1595923899, now seen corresponding path program 50 times [2020-10-14 18:07:28,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:28,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897774475] [2020-10-14 18:07:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:07:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:07:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:07:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:07:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:07:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:07:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:07:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:07:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:07:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:07:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:33,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:07:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:33,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:07:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:33,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:33,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:33,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:33,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:33,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:33,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 20 proven. 120 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-10-14 18:07:33,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897774475] [2020-10-14 18:07:33,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:33,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:07:33,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472896430] [2020-10-14 18:07:33,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:07:33,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:33,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:07:33,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:33,776 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 19 states. [2020-10-14 18:07:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:34,088 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2020-10-14 18:07:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:07:34,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-10-14 18:07:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:34,091 INFO L225 Difference]: With dead ends: 215 [2020-10-14 18:07:34,091 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:07:34,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:07:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-14 18:07:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 18:07:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-14 18:07:34,107 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 115 [2020-10-14 18:07:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:34,108 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-14 18:07:34,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:07:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-14 18:07:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 18:07:34,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:34,109 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:34,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:07:34,109 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 388052073, now seen corresponding path program 51 times [2020-10-14 18:07:34,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:34,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644341351] [2020-10-14 18:07:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:07:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:07:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:07:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:07:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:07:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:07:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:07:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:07:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:07:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:07:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:07:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:07:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 18:07:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:39,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:39,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:39,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:39,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:39,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 20 proven. 120 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-14 18:07:39,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644341351] [2020-10-14 18:07:39,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:39,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:07:39,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379580642] [2020-10-14 18:07:39,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:07:39,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:07:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:39,469 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 19 states. [2020-10-14 18:07:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:39,893 INFO L93 Difference]: Finished difference Result 218 states and 227 transitions. [2020-10-14 18:07:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:07:39,895 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 116 [2020-10-14 18:07:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:39,896 INFO L225 Difference]: With dead ends: 218 [2020-10-14 18:07:39,896 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 18:07:39,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:07:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 18:07:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2020-10-14 18:07:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 18:07:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-14 18:07:39,912 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 116 [2020-10-14 18:07:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:39,913 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-14 18:07:39,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:07:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-14 18:07:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 18:07:39,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:39,914 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:39,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 18:07:39,914 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash 167599238, now seen corresponding path program 52 times [2020-10-14 18:07:39,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:39,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128765022] [2020-10-14 18:07:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:44,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:07:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:07:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:07:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:45,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:45,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:07:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:07:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:07:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:07:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:07:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:07:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:07:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:07:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:07:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:07:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 20 proven. 136 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-14 18:07:45,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128765022] [2020-10-14 18:07:45,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:45,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:07:45,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322748636] [2020-10-14 18:07:45,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:07:45,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:45,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:07:45,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:45,212 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 20 states. [2020-10-14 18:07:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:45,598 INFO L93 Difference]: Finished difference Result 241 states and 253 transitions. [2020-10-14 18:07:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:07:45,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 117 [2020-10-14 18:07:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:45,601 INFO L225 Difference]: With dead ends: 241 [2020-10-14 18:07:45,601 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 18:07:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:07:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 18:07:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2020-10-14 18:07:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 18:07:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-14 18:07:45,624 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 117 [2020-10-14 18:07:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:45,625 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-14 18:07:45,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:07:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-14 18:07:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 18:07:45,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:45,626 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:45,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 18:07:45,626 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash -788249755, now seen corresponding path program 53 times [2020-10-14 18:07:45,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:45,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308306691] [2020-10-14 18:07:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:07:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:07:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:07:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:07:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:07:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:07:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:07:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:07:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:07:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:50,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 18:07:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:07:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 20 proven. 153 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2020-10-14 18:07:50,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308306691] [2020-10-14 18:07:50,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:50,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:07:50,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758101085] [2020-10-14 18:07:50,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:07:50,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:50,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:07:50,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:50,978 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 21 states. [2020-10-14 18:07:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:51,266 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2020-10-14 18:07:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:07:51,266 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 119 [2020-10-14 18:07:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:51,268 INFO L225 Difference]: With dead ends: 221 [2020-10-14 18:07:51,268 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 18:07:51,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 18:07:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-14 18:07:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 18:07:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-14 18:07:51,302 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 119 [2020-10-14 18:07:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:51,302 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-14 18:07:51,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:07:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-14 18:07:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 18:07:51,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:51,303 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:51,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 18:07:51,306 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1046979465, now seen corresponding path program 54 times [2020-10-14 18:07:51,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:51,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942883207] [2020-10-14 18:07:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:07:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:07:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:07:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:07:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:07:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:07:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:07:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:07:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:07:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:07:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:07:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:07:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:07:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:07:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:07:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 18:07:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:56,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:07:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:07:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:07:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:07:56,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:07:56,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:07:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:07:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:07:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:07:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:07:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 20 proven. 153 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2020-10-14 18:07:56,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942883207] [2020-10-14 18:07:56,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:07:56,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:07:56,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731353965] [2020-10-14 18:07:56,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:07:56,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:07:56,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:07:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:56,681 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 21 states. [2020-10-14 18:07:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:07:57,091 INFO L93 Difference]: Finished difference Result 228 states and 239 transitions. [2020-10-14 18:07:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:07:57,092 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 120 [2020-10-14 18:07:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:07:57,093 INFO L225 Difference]: With dead ends: 228 [2020-10-14 18:07:57,093 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 18:07:57,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:07:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 18:07:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 124. [2020-10-14 18:07:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 18:07:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2020-10-14 18:07:57,119 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 120 [2020-10-14 18:07:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:07:57,119 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2020-10-14 18:07:57,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:07:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2020-10-14 18:07:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 18:07:57,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:07:57,120 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:07:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 18:07:57,121 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:07:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:07:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -880488090, now seen corresponding path program 55 times [2020-10-14 18:07:57,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:07:57,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757435626] [2020-10-14 18:07:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:07:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:07:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:07:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:08:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 18:08:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:08:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:08:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:08:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:08:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:08:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:08:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:08:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:08:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 18:08:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:08:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 18:08:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 20 proven. 171 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2020-10-14 18:08:02,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757435626] [2020-10-14 18:08:02,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:02,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:08:02,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224498651] [2020-10-14 18:08:02,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:08:02,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:08:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:08:02,477 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 22 states. [2020-10-14 18:08:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:02,916 INFO L93 Difference]: Finished difference Result 253 states and 267 transitions. [2020-10-14 18:08:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:08:02,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 121 [2020-10-14 18:08:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:02,918 INFO L225 Difference]: With dead ends: 253 [2020-10-14 18:08:02,918 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 18:08:02,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:08:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 18:08:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-10-14 18:08:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 18:08:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-10-14 18:08:02,936 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 121 [2020-10-14 18:08:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:02,937 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-10-14 18:08:02,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:08:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-10-14 18:08:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:08:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:02,938 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:02,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 18:08:02,938 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2122425211, now seen corresponding path program 56 times [2020-10-14 18:08:02,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:02,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827087461] [2020-10-14 18:08:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:07,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 18:08:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 18:08:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:08:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:08:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:08:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:08:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:08:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:08:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:08:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:08:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 18:08:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 18:08:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:08,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:08,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:08:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-14 18:08:08,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827087461] [2020-10-14 18:08:08,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:08,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:08:08,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410198715] [2020-10-14 18:08:08,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:08:08,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:08,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:08:08,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:08:08,321 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 23 states.