/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_vector_difference_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:46:52,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:46:52,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:46:52,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:46:52,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:46:52,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:46:52,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:46:52,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:46:52,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:46:52,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:46:52,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:46:52,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:46:52,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:46:52,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:46:52,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:46:52,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:46:52,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:46:52,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:46:52,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:46:52,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:46:52,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:46:52,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:46:52,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:46:52,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:46:52,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:46:52,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:46:52,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:46:52,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:46:52,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:46:52,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:46:52,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:46:52,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:46:52,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:46:52,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:46:52,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:46:52,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:46:52,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:46:52,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:46:52,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:46:52,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:46:52,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:46:52,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:46:52,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:46:52,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:46:52,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:46:52,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:46:52,537 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:46:52,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:46:52,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:46:52,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:46:52,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:46:52,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:46:52,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:46:52,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:46:52,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:46:52,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:46:52,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:46:52,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:46:52,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:46:52,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:46:52,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:46:52,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:46:52,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:46:52,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:46:52,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:46:52,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:46:52,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:46:52,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:46:52,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:46:52,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:46:52,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:46:52,547 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:46:52,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:46:52,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:46:52,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:46:52,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:46:52,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:46:52,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2020-10-13 23:46:52,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b03d0c319/b2e56b1386654b34a01673711f1fac03/FLAGe29e08b41 [2020-10-13 23:46:53,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:46:53,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2020-10-13 23:46:53,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b03d0c319/b2e56b1386654b34a01673711f1fac03/FLAGe29e08b41 [2020-10-13 23:46:53,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b03d0c319/b2e56b1386654b34a01673711f1fac03 [2020-10-13 23:46:53,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:46:53,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:46:53,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:46:53,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:46:53,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:46:53,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:46:53" (1/1) ... [2020-10-13 23:46:53,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:53, skipping insertion in model container [2020-10-13 23:46:53,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:46:53" (1/1) ... [2020-10-13 23:46:53,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:46:53,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:46:54,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:46:54,049 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:46:54,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:46:54,096 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:46:54,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54 WrapperNode [2020-10-13 23:46:54,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:46:54,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:46:54,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:46:54,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:46:54,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... [2020-10-13 23:46:54,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:46:54,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:46:54,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:46:54,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:46:54,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:46:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:46:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:46:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:46:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:46:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:46:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:46:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:46:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:46:54,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:46:54,592 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:46:54,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:46:54 BoogieIcfgContainer [2020-10-13 23:46:54,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:46:54,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:46:54,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:46:54,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:46:54,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:46:53" (1/3) ... [2020-10-13 23:46:54,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ffb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:46:54, skipping insertion in model container [2020-10-13 23:46:54,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:46:54" (2/3) ... [2020-10-13 23:46:54,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ffb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:46:54, skipping insertion in model container [2020-10-13 23:46:54,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:46:54" (3/3) ... [2020-10-13 23:46:54,606 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_vector_difference_ground.i [2020-10-13 23:46:54,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:46:54,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:46:54,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:46:54,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:46:54,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:46:54,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:46:54,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:46:54,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:46:54,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:46:54,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:46:54,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:46:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-13 23:46:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:46:54,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:54,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:54,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1498727252, now seen corresponding path program 1 times [2020-10-13 23:46:54,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:54,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101770307] [2020-10-13 23:46:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:55,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:46:55,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:46:55,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 23:46:55,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:55,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:46:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:46:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:46:55,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:55,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:46:55,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101770307] [2020-10-13 23:46:55,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:46:55,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:46:55,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462295300] [2020-10-13 23:46:55,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:46:55,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:55,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:46:55,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:46:55,266 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-13 23:46:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:55,377 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-10-13 23:46:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:46:55,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:46:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:55,388 INFO L225 Difference]: With dead ends: 44 [2020-10-13 23:46:55,389 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 23:46:55,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:46:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 23:46:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 23:46:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 23:46:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-13 23:46:55,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-13 23:46:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:55,435 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-13 23:46:55,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:46:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-13 23:46:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:46:55,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:55,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:55,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:46:55,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash 756064934, now seen corresponding path program 1 times [2020-10-13 23:46:55,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:55,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125445249] [2020-10-13 23:46:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:46:55,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:46:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 23:46:55,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:55,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:46:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:55,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:46:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:55,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:46:55,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:55,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:46:55,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125445249] [2020-10-13 23:46:55,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:46:55,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:46:55,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691097305] [2020-10-13 23:46:55,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:46:55,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:46:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:46:55,690 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-10-13 23:46:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:55,758 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 23:46:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:46:55,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:46:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:55,760 INFO L225 Difference]: With dead ends: 37 [2020-10-13 23:46:55,760 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 23:46:55,761 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 [2020-10-13 23:46:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 23:46:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-13 23:46:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 23:46:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-13 23:46:55,769 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-13 23:46:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:55,769 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-13 23:46:55,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:46:55,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-13 23:46:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 23:46:55,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:55,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:55,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:46:55,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:55,772 INFO L82 PathProgramCache]: Analyzing trace with hash 434016106, now seen corresponding path program 1 times [2020-10-13 23:46:55,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:55,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695839303] [2020-10-13 23:46:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:46:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:46:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-13 23:46:56,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:46:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:46:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:56,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:56,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:46:56,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:56,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:56,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:46:56,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695839303] [2020-10-13 23:46:56,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:56,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:46:56,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963878749] [2020-10-13 23:46:56,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:46:56,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:56,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:46:56,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:46:56,381 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-10-13 23:46:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:56,455 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-13 23:46:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:46:56,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 23:46:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:56,457 INFO L225 Difference]: With dead ends: 41 [2020-10-13 23:46:56,457 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:46:56,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:46:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:46:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-13 23:46:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:46:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-13 23:46:56,465 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2020-10-13 23:46:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:56,465 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-13 23:46:56,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:46:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-13 23:46:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:46:56,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:56,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:56,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:46:56,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:56,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1099220258, now seen corresponding path program 2 times [2020-10-13 23:46:56,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:56,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182882464] [2020-10-13 23:46:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 23:46:57,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:46:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-13 23:46:57,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:57,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:46:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:46:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:57,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:57,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:46:57,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:57,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 23:46:57,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182882464] [2020-10-13 23:46:57,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:57,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:46:57,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450751352] [2020-10-13 23:46:57,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:46:57,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:57,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:46:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:46:57,569 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-13 23:46:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:57,659 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 23:46:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:46:57,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 23:46:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:57,661 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:46:57,661 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:46:57,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:46:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:46:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:46:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:46:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-13 23:46:57,668 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-10-13 23:46:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:57,669 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-13 23:46:57,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:46:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-13 23:46:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 23:46:57,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:57,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:57,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:46:57,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:57,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1323870958, now seen corresponding path program 3 times [2020-10-13 23:46:57,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:57,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941718674] [2020-10-13 23:46:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:59,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:46:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:46:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-13 23:46:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:46:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:46:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:46:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:46:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:46:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:46:59,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:46:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:46:59,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:46:59,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:46:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:46:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:46:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:46:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:46:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 23:46:59,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941718674] [2020-10-13 23:46:59,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:46:59,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:46:59,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820075020] [2020-10-13 23:46:59,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:46:59,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:46:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:46:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:46:59,193 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2020-10-13 23:46:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:46:59,297 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-13 23:46:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:46:59,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-13 23:46:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:46:59,300 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:46:59,300 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:46:59,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:46:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:46:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-13 23:46:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:46:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-13 23:46:59,307 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2020-10-13 23:46:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:46:59,307 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-13 23:46:59,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:46:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-13 23:46:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 23:46:59,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:46:59,309 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:46:59,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:46:59,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:46:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:46:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1351588766, now seen corresponding path program 4 times [2020-10-13 23:46:59,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:46:59,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520995848] [2020-10-13 23:46:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:46:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:46:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:46:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:02,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:02,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 23:47:02,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-13 23:47:02,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:02,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:47:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:47:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:02,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 23:47:02,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520995848] [2020-10-13 23:47:02,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:02,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:47:02,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957469485] [2020-10-13 23:47:02,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:47:02,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:47:02,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:47:02,226 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-10-13 23:47:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:02,329 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 23:47:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:47:02,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-13 23:47:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:02,330 INFO L225 Difference]: With dead ends: 53 [2020-10-13 23:47:02,330 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:47:02,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:47:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:47:02,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:47:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:47:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-13 23:47:02,338 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 27 [2020-10-13 23:47:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:02,338 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-13 23:47:02,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:47:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-13 23:47:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:47:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:02,340 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:02,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:47:02,340 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2074456690, now seen corresponding path program 5 times [2020-10-13 23:47:02,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:02,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661300291] [2020-10-13 23:47:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:47:06,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4371 [2020-10-13 23:47:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:06,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:47:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:47:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:06,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:06,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:06,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:47:06,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661300291] [2020-10-13 23:47:06,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:06,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:47:06,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146279811] [2020-10-13 23:47:06,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:47:06,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:06,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:47:06,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:47:06,830 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 9 states. [2020-10-13 23:47:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:06,966 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 23:47:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:47:06,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-13 23:47:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:06,968 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:47:06,968 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 23:47:06,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:47:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 23:47:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-13 23:47:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:47:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-13 23:47:06,975 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2020-10-13 23:47:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:06,976 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-13 23:47:06,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:47:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-13 23:47:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:47:06,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:06,977 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:06,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:47:06,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:06,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:06,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1266817510, now seen corresponding path program 6 times [2020-10-13 23:47:06,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:06,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216311237] [2020-10-13 23:47:06,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:11,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:47:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4948 [2020-10-13 23:47:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:11,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:47:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:47:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:12,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:12,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:12,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 23:47:12,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216311237] [2020-10-13 23:47:12,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:12,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:47:12,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539400910] [2020-10-13 23:47:12,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:47:12,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:12,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:47:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:47:12,038 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 10 states. [2020-10-13 23:47:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:12,155 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-13 23:47:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:47:12,156 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-13 23:47:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:12,156 INFO L225 Difference]: With dead ends: 61 [2020-10-13 23:47:12,157 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:47:12,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:47:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:47:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:47:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:47:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-13 23:47:12,163 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 33 [2020-10-13 23:47:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:12,163 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-13 23:47:12,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:47:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-13 23:47:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 23:47:12,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:12,165 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:12,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:47:12,165 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1266096650, now seen corresponding path program 7 times [2020-10-13 23:47:12,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:12,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130454394] [2020-10-13 23:47:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:12,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:47:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:47:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:17,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:47:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:47:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:17,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:17,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:17,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:47:17,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130454394] [2020-10-13 23:47:17,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:17,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:47:17,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949994176] [2020-10-13 23:47:17,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:47:17,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:47:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:47:17,315 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 11 states. [2020-10-13 23:47:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:17,430 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-13 23:47:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:47:17,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-13 23:47:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:17,432 INFO L225 Difference]: With dead ends: 65 [2020-10-13 23:47:17,432 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:47:17,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:47:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:47:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-13 23:47:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:47:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-13 23:47:17,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 36 [2020-10-13 23:47:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:17,444 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-13 23:47:17,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:47:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-13 23:47:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 23:47:17,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:17,445 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:17,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:47:17,446 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash -786668394, now seen corresponding path program 8 times [2020-10-13 23:47:17,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:17,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279979997] [2020-10-13 23:47:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:22,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:47:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:47:22,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:22,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:47:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:47:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:22,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:22,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:22,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:47:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279979997] [2020-10-13 23:47:22,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:22,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:47:22,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508125372] [2020-10-13 23:47:22,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:47:22,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:47:22,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:47:22,577 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 12 states. [2020-10-13 23:47:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:22,719 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-13 23:47:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:47:22,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-13 23:47:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:22,720 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:47:22,721 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:47:22,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:47:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:47:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:47:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:47:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-13 23:47:22,731 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 39 [2020-10-13 23:47:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:22,734 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-13 23:47:22,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:47:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-13 23:47:22,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:47:22,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:22,735 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:22,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:47:22,736 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1232763526, now seen corresponding path program 9 times [2020-10-13 23:47:22,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:22,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354974938] [2020-10-13 23:47:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:27,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:27,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:47:27,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:47:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:27,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:27,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:27,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:27,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:27,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 23:47:27,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354974938] [2020-10-13 23:47:27,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:27,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:47:27,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859403426] [2020-10-13 23:47:27,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:47:27,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:47:27,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:47:27,881 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 13 states. [2020-10-13 23:47:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:27,978 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-13 23:47:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:47:27,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-13 23:47:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:27,980 INFO L225 Difference]: With dead ends: 73 [2020-10-13 23:47:27,980 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 23:47:27,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:47:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 23:47:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-13 23:47:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 23:47:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-13 23:47:27,986 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 42 [2020-10-13 23:47:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:27,987 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-13 23:47:27,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:47:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-13 23:47:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 23:47:27,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:27,988 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:27,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:47:27,988 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1346906350, now seen corresponding path program 10 times [2020-10-13 23:47:27,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:27,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545832915] [2020-10-13 23:47:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:33,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:47:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:47:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 23:47:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:33,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:47:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:47:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:47:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:33,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:33,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:47:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-13 23:47:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545832915] [2020-10-13 23:47:33,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:33,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:47:33,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240668934] [2020-10-13 23:47:33,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:47:33,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:47:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:47:33,199 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 14 states. [2020-10-13 23:47:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:33,308 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 23:47:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:47:33,309 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-13 23:47:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:33,310 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:47:33,310 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:47:33,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:47:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:47:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:47:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:47:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-13 23:47:33,320 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-13 23:47:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:33,320 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-13 23:47:33,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:47:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-13 23:47:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:47:33,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:33,321 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:33,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:47:33,322 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:33,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1259262206, now seen corresponding path program 11 times [2020-10-13 23:47:33,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:33,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546019616] [2020-10-13 23:47:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:47:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:47:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:47:38,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546019616] [2020-10-13 23:47:38,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:38,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:47:38,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004256184] [2020-10-13 23:47:38,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:47:38,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:38,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:47:38,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:47:38,501 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 15 states. [2020-10-13 23:47:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:38,648 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 23:47:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:47:38,649 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 23:47:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:38,650 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:47:38,650 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 23:47:38,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:47:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 23:47:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-13 23:47:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 23:47:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-13 23:47:38,656 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2020-10-13 23:47:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:38,656 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-13 23:47:38,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:47:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-13 23:47:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 23:47:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:38,658 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:38,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:47:38,658 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1692598898, now seen corresponding path program 12 times [2020-10-13 23:47:38,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:38,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058577425] [2020-10-13 23:47:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:43,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:47:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:43,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:43,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 23:47:43,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058577425] [2020-10-13 23:47:43,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:43,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:47:43,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24379270] [2020-10-13 23:47:43,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:47:43,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:43,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:47:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:47:43,830 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 16 states. [2020-10-13 23:47:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:43,940 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 23:47:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:47:43,940 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-13 23:47:43,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:43,941 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:47:43,942 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:47:43,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:47:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:47:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:47:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:47:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-13 23:47:43,948 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 51 [2020-10-13 23:47:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:43,948 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-13 23:47:43,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:47:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-13 23:47:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:47:43,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:43,950 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:43,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:47:43,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1407711102, now seen corresponding path program 13 times [2020-10-13 23:47:43,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:43,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154183335] [2020-10-13 23:47:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:47:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:49,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 23:47:49,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154183335] [2020-10-13 23:47:49,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:49,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:47:49,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550294881] [2020-10-13 23:47:49,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:47:49,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:47:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:47:49,153 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 17 states. [2020-10-13 23:47:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:49,343 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-13 23:47:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:47:49,343 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-13 23:47:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:49,344 INFO L225 Difference]: With dead ends: 89 [2020-10-13 23:47:49,345 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:47:49,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:47:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:47:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-13 23:47:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 23:47:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-13 23:47:49,351 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 54 [2020-10-13 23:47:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:49,352 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-13 23:47:49,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:47:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-13 23:47:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 23:47:49,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:49,353 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:49,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:47:49,353 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1147627510, now seen corresponding path program 14 times [2020-10-13 23:47:49,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:49,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884759456] [2020-10-13 23:47:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:54,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:54,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:47:54,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:47:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:47:54,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:54,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:47:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:47:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:54,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:54,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 23:47:54,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884759456] [2020-10-13 23:47:54,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:54,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:47:54,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021198513] [2020-10-13 23:47:54,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:47:54,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:54,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:47:54,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:47:54,588 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 18 states. [2020-10-13 23:47:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:47:54,734 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:47:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:47:54,735 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-13 23:47:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:47:54,736 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:47:54,736 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:47:54,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:47:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:47:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:47:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:47:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-13 23:47:54,745 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2020-10-13 23:47:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:47:54,745 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-13 23:47:54,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:47:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-13 23:47:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:47:54,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:47:54,746 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:47:54,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:47:54,747 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:47:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:47:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash -401314810, now seen corresponding path program 15 times [2020-10-13 23:47:54,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:47:54,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788696107] [2020-10-13 23:47:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:47:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:59,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:47:59,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:47:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:47:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:47:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:47:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:47:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:47:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:47:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:47:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:47:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:47:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:47:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:47:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:47:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:47:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:47:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 23:47:59,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788696107] [2020-10-13 23:47:59,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:47:59,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:47:59,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957032446] [2020-10-13 23:47:59,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:47:59,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:47:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:47:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:47:59,985 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 19 states. [2020-10-13 23:48:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:00,250 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 23:48:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:48:00,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-13 23:48:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:00,252 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:48:00,252 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 23:48:00,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:48:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 23:48:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-13 23:48:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 23:48:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-13 23:48:00,274 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 60 [2020-10-13 23:48:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:00,274 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-13 23:48:00,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:48:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-13 23:48:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 23:48:00,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:00,279 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:00,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:48:00,280 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:00,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:00,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1292409210, now seen corresponding path program 16 times [2020-10-13 23:48:00,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:00,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107799331] [2020-10-13 23:48:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:48:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:48:05,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:05,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:48:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:48:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:05,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:05,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:05,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:48:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:05,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:48:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-13 23:48:05,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107799331] [2020-10-13 23:48:05,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:05,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:48:05,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076948779] [2020-10-13 23:48:05,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:48:05,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:48:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:48:05,610 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 20 states. [2020-10-13 23:48:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:05,848 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-13 23:48:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:48:05,849 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-13 23:48:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:05,850 INFO L225 Difference]: With dead ends: 101 [2020-10-13 23:48:05,850 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:48:05,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:48:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:48:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:48:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:48:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-13 23:48:05,867 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 63 [2020-10-13 23:48:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:05,868 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-13 23:48:05,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:48:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-13 23:48:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:48:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:05,870 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:05,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:48:05,871 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1173830538, now seen corresponding path program 17 times [2020-10-13 23:48:05,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:05,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812273154] [2020-10-13 23:48:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 23:48:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:48:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:48:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:48:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:11,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 23:48:11,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812273154] [2020-10-13 23:48:11,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:11,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:48:11,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33947122] [2020-10-13 23:48:11,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:48:11,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:48:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:48:11,168 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 21 states. [2020-10-13 23:48:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:11,329 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-13 23:48:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:48:11,329 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 66 [2020-10-13 23:48:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:11,330 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:48:11,330 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 23:48:11,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:48:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 23:48:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-13 23:48:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 23:48:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-13 23:48:11,336 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 66 [2020-10-13 23:48:11,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:11,336 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-13 23:48:11,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:48:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-13 23:48:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:48:11,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:11,337 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:11,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:48:11,337 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash 948316418, now seen corresponding path program 18 times [2020-10-13 23:48:11,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:11,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204216915] [2020-10-13 23:48:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:48:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:48:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:16,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-13 23:48:16,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204216915] [2020-10-13 23:48:16,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:16,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:48:16,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412819784] [2020-10-13 23:48:16,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:48:16,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:16,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:48:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:48:16,618 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 22 states. [2020-10-13 23:48:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:16,775 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-13 23:48:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:48:16,775 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 69 [2020-10-13 23:48:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:16,776 INFO L225 Difference]: With dead ends: 109 [2020-10-13 23:48:16,776 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:48:16,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:48:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:48:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:48:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:48:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-13 23:48:16,785 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 69 [2020-10-13 23:48:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:16,786 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-13 23:48:16,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:48:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-13 23:48:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 23:48:16,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:16,787 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:16,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:48:16,788 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1456228594, now seen corresponding path program 19 times [2020-10-13 23:48:16,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:16,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495110463] [2020-10-13 23:48:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:21,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:21,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:48:21,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 23:48:21,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:21,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:48:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:48:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-13 23:48:22,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495110463] [2020-10-13 23:48:22,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:22,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:48:22,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206664097] [2020-10-13 23:48:22,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:48:22,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:22,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:48:22,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:48:22,123 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 23 states. [2020-10-13 23:48:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:22,314 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-13 23:48:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:48:22,315 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-13 23:48:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:22,316 INFO L225 Difference]: With dead ends: 113 [2020-10-13 23:48:22,316 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 23:48:22,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:48:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 23:48:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-13 23:48:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 23:48:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-10-13 23:48:22,328 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 72 [2020-10-13 23:48:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:22,328 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-10-13 23:48:22,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:48:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-10-13 23:48:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:48:22,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:22,329 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:22,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:48:22,330 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1257136258, now seen corresponding path program 20 times [2020-10-13 23:48:22,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:22,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441523217] [2020-10-13 23:48:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:27,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:27,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:48:27,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:48:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:27,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:27,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:27,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:27,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:48:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-13 23:48:27,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441523217] [2020-10-13 23:48:27,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:27,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:48:27,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175421732] [2020-10-13 23:48:27,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:48:27,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:27,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:48:27,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:48:27,736 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 24 states. [2020-10-13 23:48:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:27,960 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 23:48:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:48:27,963 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-13 23:48:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:27,964 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:48:27,964 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:48:27,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:48:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:48:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:48:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:48:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-13 23:48:27,969 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 75 [2020-10-13 23:48:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:27,969 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-13 23:48:27,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:48:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-13 23:48:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:48:27,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:27,970 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:27,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:48:27,971 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:27,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:27,971 INFO L82 PathProgramCache]: Analyzing trace with hash -172155246, now seen corresponding path program 21 times [2020-10-13 23:48:27,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:27,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843874604] [2020-10-13 23:48:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:33,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:48:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:48:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-13 23:48:33,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843874604] [2020-10-13 23:48:33,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:33,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:48:33,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131078641] [2020-10-13 23:48:33,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:48:33,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:33,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:48:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:48:33,419 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 25 states. [2020-10-13 23:48:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:33,673 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-13 23:48:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:48:33,673 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 78 [2020-10-13 23:48:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:33,674 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:48:33,674 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 23:48:33,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:48:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 23:48:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-13 23:48:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:48:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-13 23:48:33,680 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 78 [2020-10-13 23:48:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:33,681 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-13 23:48:33,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:48:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-13 23:48:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 23:48:33,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:33,682 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:33,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:48:33,682 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash -555316742, now seen corresponding path program 22 times [2020-10-13 23:48:33,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:33,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272880040] [2020-10-13 23:48:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:38,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:48:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:39,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-13 23:48:39,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272880040] [2020-10-13 23:48:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:39,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:48:39,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157220928] [2020-10-13 23:48:39,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:48:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:48:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:48:39,219 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 26 states. [2020-10-13 23:48:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:39,450 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-13 23:48:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:48:39,451 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 81 [2020-10-13 23:48:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:39,452 INFO L225 Difference]: With dead ends: 125 [2020-10-13 23:48:39,452 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:48:39,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:48:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:48:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:48:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:48:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-13 23:48:39,458 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 81 [2020-10-13 23:48:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:39,458 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-13 23:48:39,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:48:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-13 23:48:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:48:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:39,459 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:39,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:48:39,459 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1946595862, now seen corresponding path program 23 times [2020-10-13 23:48:39,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:39,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535922764] [2020-10-13 23:48:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:44,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:48:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 23:48:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:44,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:44,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:44,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-13 23:48:44,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535922764] [2020-10-13 23:48:44,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:44,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:48:44,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87668042] [2020-10-13 23:48:44,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:48:44,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:44,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:48:44,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:48:44,924 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 27 states. [2020-10-13 23:48:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:45,164 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 23:48:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:48:45,164 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 84 [2020-10-13 23:48:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:45,166 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:48:45,166 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 23:48:45,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:48:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 23:48:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-13 23:48:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 23:48:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-13 23:48:45,176 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 84 [2020-10-13 23:48:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:45,176 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-13 23:48:45,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:48:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-13 23:48:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 23:48:45,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:45,177 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:45,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:48:45,177 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1439803510, now seen corresponding path program 24 times [2020-10-13 23:48:45,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:45,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765089772] [2020-10-13 23:48:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:50,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 23:48:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:48:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:50,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:50,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:50,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-13 23:48:50,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765089772] [2020-10-13 23:48:50,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:50,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:48:50,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760705168] [2020-10-13 23:48:50,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:48:50,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:48:50,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:48:50,716 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 28 states. [2020-10-13 23:48:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:50,977 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 23:48:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:48:50,977 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2020-10-13 23:48:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:50,978 INFO L225 Difference]: With dead ends: 133 [2020-10-13 23:48:50,979 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:48:50,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:48:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:48:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:48:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:48:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-13 23:48:50,985 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 87 [2020-10-13 23:48:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:50,986 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-13 23:48:50,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:48:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-13 23:48:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 23:48:50,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:50,987 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:50,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:48:50,987 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:50,988 INFO L82 PathProgramCache]: Analyzing trace with hash 889434522, now seen corresponding path program 25 times [2020-10-13 23:48:50,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:50,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266672143] [2020-10-13 23:48:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:48:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-13 23:48:56,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:48:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:48:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 23:48:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:48:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:48:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:48:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:48:56,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:48:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:48:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:48:56,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:48:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:48:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:48:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:48:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:48:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-13 23:48:56,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266672143] [2020-10-13 23:48:56,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:48:56,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:48:56,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649199956] [2020-10-13 23:48:56,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:48:56,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:48:56,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:48:56,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:48:56,657 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 29 states. [2020-10-13 23:48:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:48:56,937 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:48:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:48:56,938 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 90 [2020-10-13 23:48:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:48:56,939 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:48:56,939 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 23:48:56,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:48:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 23:48:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-13 23:48:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 23:48:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-13 23:48:56,945 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 90 [2020-10-13 23:48:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:48:56,945 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-13 23:48:56,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:48:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-13 23:48:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 23:48:56,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:48:56,946 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:48:56,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:48:56,947 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:48:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:48:56,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1059044082, now seen corresponding path program 26 times [2020-10-13 23:48:56,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:48:56,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239200403] [2020-10-13 23:48:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:48:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:48:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:49:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:49:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:02,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-13 23:49:02,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239200403] [2020-10-13 23:49:02,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:02,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:49:02,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022299601] [2020-10-13 23:49:02,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:49:02,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:02,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:49:02,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:49:02,472 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 30 states. [2020-10-13 23:49:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:02,676 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-13 23:49:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:49:02,676 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 93 [2020-10-13 23:49:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:02,677 INFO L225 Difference]: With dead ends: 141 [2020-10-13 23:49:02,678 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:49:02,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:49:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:49:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:49:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:49:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-13 23:49:02,682 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 93 [2020-10-13 23:49:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:02,683 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-13 23:49:02,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:49:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-13 23:49:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:49:02,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:02,684 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:02,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:49:02,684 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:02,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1982291230, now seen corresponding path program 27 times [2020-10-13 23:49:02,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:02,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179805666] [2020-10-13 23:49:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5197 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:49:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:08,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-13 23:49:08,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179805666] [2020-10-13 23:49:08,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:08,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:49:08,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818484728] [2020-10-13 23:49:08,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:49:08,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:49:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:49:08,398 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 31 states. [2020-10-13 23:49:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:08,695 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 23:49:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:49:08,696 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 96 [2020-10-13 23:49:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:08,697 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:49:08,697 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 23:49:08,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:49:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 23:49:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-13 23:49:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 23:49:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-13 23:49:08,705 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 96 [2020-10-13 23:49:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:08,705 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-13 23:49:08,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:49:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-13 23:49:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 23:49:08,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:08,706 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:08,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:49:08,707 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:08,707 INFO L82 PathProgramCache]: Analyzing trace with hash -509771410, now seen corresponding path program 28 times [2020-10-13 23:49:08,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:08,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934828067] [2020-10-13 23:49:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:49:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:14,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-13 23:49:14,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934828067] [2020-10-13 23:49:14,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:14,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:49:14,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113138481] [2020-10-13 23:49:14,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:49:14,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:14,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:49:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:49:14,307 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 32 states. [2020-10-13 23:49:14,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:14,637 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-13 23:49:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:49:14,638 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 99 [2020-10-13 23:49:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:14,641 INFO L225 Difference]: With dead ends: 149 [2020-10-13 23:49:14,641 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:49:14,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:49:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:49:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:49:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:49:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-13 23:49:14,650 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 99 [2020-10-13 23:49:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:14,650 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-13 23:49:14,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:49:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-13 23:49:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:49:14,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:14,651 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:14,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:49:14,652 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash 90502306, now seen corresponding path program 29 times [2020-10-13 23:49:14,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:14,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349179518] [2020-10-13 23:49:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:19,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:49:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:49:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:20,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:20,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:20,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:20,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:20,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:20,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-10-13 23:49:20,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349179518] [2020-10-13 23:49:20,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:20,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 23:49:20,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701133725] [2020-10-13 23:49:20,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 23:49:20,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:20,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 23:49:20,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:49:20,461 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 33 states. [2020-10-13 23:49:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:20,693 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-13 23:49:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:49:20,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 102 [2020-10-13 23:49:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:20,695 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:49:20,695 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:49:20,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:49:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:49:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-13 23:49:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 23:49:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-13 23:49:20,702 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 102 [2020-10-13 23:49:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:20,702 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-13 23:49:20,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 23:49:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-13 23:49:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 23:49:20,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:20,703 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:20,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:49:20,704 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:20,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1100463082, now seen corresponding path program 30 times [2020-10-13 23:49:20,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:20,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993894312] [2020-10-13 23:49:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:25,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 23:49:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:49:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:26,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:26,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2020-10-13 23:49:26,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993894312] [2020-10-13 23:49:26,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:26,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 23:49:26,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356732725] [2020-10-13 23:49:26,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 23:49:26,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 23:49:26,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:49:26,323 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 34 states. [2020-10-13 23:49:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:26,640 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-13 23:49:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:49:26,640 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 105 [2020-10-13 23:49:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:26,642 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:49:26,642 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:49:26,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:49:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:49:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 23:49:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:49:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-13 23:49:26,649 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 105 [2020-10-13 23:49:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:26,649 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-13 23:49:26,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 23:49:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-13 23:49:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:49:26,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:26,650 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:26,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:49:26,651 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1523599322, now seen corresponding path program 31 times [2020-10-13 23:49:26,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:26,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421496830] [2020-10-13 23:49:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:31,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5256 [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 23:49:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 23:49:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:32,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-13 23:49:32,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421496830] [2020-10-13 23:49:32,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:32,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:49:32,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172011203] [2020-10-13 23:49:32,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:49:32,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:49:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:49:32,558 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 35 states. [2020-10-13 23:49:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:32,901 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-13 23:49:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 23:49:32,902 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 108 [2020-10-13 23:49:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:32,904 INFO L225 Difference]: With dead ends: 161 [2020-10-13 23:49:32,904 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 23:49:32,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:49:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 23:49:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-13 23:49:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-13 23:49:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-13 23:49:32,911 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 108 [2020-10-13 23:49:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:32,911 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-13 23:49:32,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:49:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-13 23:49:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 23:49:32,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:32,912 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:32,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:49:32,913 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1126487450, now seen corresponding path program 32 times [2020-10-13 23:49:32,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:32,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032435693] [2020-10-13 23:49:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5458 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:49:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:49:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:39,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-13 23:49:39,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032435693] [2020-10-13 23:49:39,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:39,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:49:39,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406385714] [2020-10-13 23:49:39,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:49:39,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:39,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:49:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:49:39,149 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 36 states. [2020-10-13 23:49:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:39,497 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2020-10-13 23:49:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 23:49:39,498 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 111 [2020-10-13 23:49:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:39,499 INFO L225 Difference]: With dead ends: 165 [2020-10-13 23:49:39,499 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 23:49:39,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:49:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 23:49:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-13 23:49:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 23:49:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-13 23:49:39,507 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 111 [2020-10-13 23:49:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:39,508 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-13 23:49:39,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:49:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-13 23:49:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:49:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:39,510 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:39,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:49:39,510 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1887102890, now seen corresponding path program 33 times [2020-10-13 23:49:39,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:39,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214746498] [2020-10-13 23:49:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:44,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:49:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:49:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:49:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:45,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-13 23:49:45,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214746498] [2020-10-13 23:49:45,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:45,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 23:49:45,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666554344] [2020-10-13 23:49:45,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 23:49:45,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 23:49:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:49:45,340 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 37 states. [2020-10-13 23:49:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:45,693 INFO L93 Difference]: Finished difference Result 169 states and 174 transitions. [2020-10-13 23:49:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:49:45,693 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 114 [2020-10-13 23:49:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:45,695 INFO L225 Difference]: With dead ends: 169 [2020-10-13 23:49:45,695 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 23:49:45,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:49:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 23:49:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2020-10-13 23:49:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 23:49:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-13 23:49:45,701 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 114 [2020-10-13 23:49:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:45,701 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-13 23:49:45,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-13 23:49:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-13 23:49:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 23:49:45,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:45,702 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:45,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:49:45,702 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:45,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1498116894, now seen corresponding path program 34 times [2020-10-13 23:49:45,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:45,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710639732] [2020-10-13 23:49:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:49:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5357 [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 23:49:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2020-10-13 23:49:51,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710639732] [2020-10-13 23:49:51,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:51,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 23:49:51,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514759227] [2020-10-13 23:49:51,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 23:49:51,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 23:49:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:49:51,827 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 38 states. [2020-10-13 23:49:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:52,197 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2020-10-13 23:49:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 23:49:52,197 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 117 [2020-10-13 23:49:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:52,198 INFO L225 Difference]: With dead ends: 173 [2020-10-13 23:49:52,199 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 23:49:52,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 23:49:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 23:49:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-13 23:49:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 23:49:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-13 23:49:52,204 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 117 [2020-10-13 23:49:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:52,205 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-13 23:49:52,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 23:49:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-13 23:49:52,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:49:52,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:52,206 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:52,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:49:52,206 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:52,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:52,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1052361518, now seen corresponding path program 35 times [2020-10-13 23:49:52,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:52,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428795441] [2020-10-13 23:49:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:57,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:49:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:49:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:49:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:49:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:49:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:49:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:49:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:49:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:49:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-13 23:49:58,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428795441] [2020-10-13 23:49:58,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:49:58,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-13 23:49:58,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449624659] [2020-10-13 23:49:58,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-13 23:49:58,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:49:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-13 23:49:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:49:58,170 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 39 states. [2020-10-13 23:49:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:49:58,476 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2020-10-13 23:49:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 23:49:58,476 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 120 [2020-10-13 23:49:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:49:58,478 INFO L225 Difference]: With dead ends: 177 [2020-10-13 23:49:58,478 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 23:49:58,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 23:49:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 23:49:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-13 23:49:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 23:49:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-13 23:49:58,485 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 120 [2020-10-13 23:49:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:49:58,486 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-13 23:49:58,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-13 23:49:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-13 23:49:58,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 23:49:58,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:49:58,487 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:49:58,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:49:58,487 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:49:58,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:49:58,488 INFO L82 PathProgramCache]: Analyzing trace with hash -470768802, now seen corresponding path program 36 times [2020-10-13 23:49:58,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:49:58,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626862891] [2020-10-13 23:49:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:49:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:49:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 23:50:03,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5323 [2020-10-13 23:50:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 23:50:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 23:50:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:50:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:04,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:04,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2020-10-13 23:50:04,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626862891] [2020-10-13 23:50:04,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:04,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-13 23:50:04,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058788557] [2020-10-13 23:50:04,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-13 23:50:04,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-13 23:50:04,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:50:04,674 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 40 states. [2020-10-13 23:50:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:05,078 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2020-10-13 23:50:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 23:50:05,079 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 123 [2020-10-13 23:50:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:05,080 INFO L225 Difference]: With dead ends: 181 [2020-10-13 23:50:05,080 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 23:50:05,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:50:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 23:50:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-13 23:50:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 23:50:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-13 23:50:05,085 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 123 [2020-10-13 23:50:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:05,086 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-13 23:50:05,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-13 23:50:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-13 23:50:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:50:05,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:05,087 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:05,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:50:05,087 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 132090546, now seen corresponding path program 37 times [2020-10-13 23:50:05,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:05,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641228849] [2020-10-13 23:50:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:10,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:50:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5266 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 23:50:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:11,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:11,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:11,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:11,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:50:11,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641228849] [2020-10-13 23:50:11,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:11,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-13 23:50:11,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416833468] [2020-10-13 23:50:11,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-13 23:50:11,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:11,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-13 23:50:11,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:50:11,254 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 41 states. [2020-10-13 23:50:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:11,640 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2020-10-13 23:50:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 23:50:11,641 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 126 [2020-10-13 23:50:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:11,642 INFO L225 Difference]: With dead ends: 185 [2020-10-13 23:50:11,642 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 23:50:11,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 23:50:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 23:50:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-10-13 23:50:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 23:50:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2020-10-13 23:50:11,648 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 126 [2020-10-13 23:50:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:11,648 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2020-10-13 23:50:11,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-13 23:50:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2020-10-13 23:50:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 23:50:11,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:11,649 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:11,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:50:11,650 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2032390694, now seen corresponding path program 38 times [2020-10-13 23:50:11,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643654304] [2020-10-13 23:50:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 23:50:16,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 23:50:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:17,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-13 23:50:17,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643654304] [2020-10-13 23:50:17,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:17,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-13 23:50:17,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372139097] [2020-10-13 23:50:17,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-13 23:50:17,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-13 23:50:17,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:50:17,666 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 42 states. [2020-10-13 23:50:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:18,054 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2020-10-13 23:50:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 23:50:18,055 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 129 [2020-10-13 23:50:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:18,057 INFO L225 Difference]: With dead ends: 189 [2020-10-13 23:50:18,057 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 23:50:18,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 23:50:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 23:50:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-13 23:50:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 23:50:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-10-13 23:50:18,063 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 129 [2020-10-13 23:50:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:18,063 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-10-13 23:50:18,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-13 23:50:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-10-13 23:50:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 23:50:18,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:18,065 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:18,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:50:18,065 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:18,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:18,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1214217782, now seen corresponding path program 39 times [2020-10-13 23:50:18,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:18,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512472051] [2020-10-13 23:50:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:23,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:50:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-13 23:50:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:23,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 23:50:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 23:50:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:50:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2020-10-13 23:50:24,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512472051] [2020-10-13 23:50:24,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:24,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-13 23:50:24,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293511760] [2020-10-13 23:50:24,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-13 23:50:24,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:24,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-13 23:50:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 23:50:24,225 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 43 states. [2020-10-13 23:50:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:24,668 INFO L93 Difference]: Finished difference Result 193 states and 198 transitions. [2020-10-13 23:50:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 23:50:24,669 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 132 [2020-10-13 23:50:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:24,670 INFO L225 Difference]: With dead ends: 193 [2020-10-13 23:50:24,670 INFO L226 Difference]: Without dead ends: 141 [2020-10-13 23:50:24,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 23:50:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-13 23:50:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-10-13 23:50:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 23:50:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2020-10-13 23:50:24,676 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 132 [2020-10-13 23:50:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:24,677 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2020-10-13 23:50:24,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-13 23:50:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2020-10-13 23:50:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 23:50:24,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:24,678 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:24,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:50:24,678 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1799613526, now seen corresponding path program 40 times [2020-10-13 23:50:24,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:24,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038785573] [2020-10-13 23:50:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:29,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:50:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:30,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2020-10-13 23:50:30,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038785573] [2020-10-13 23:50:30,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:30,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-13 23:50:30,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355313667] [2020-10-13 23:50:30,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-13 23:50:30,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-13 23:50:30,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 23:50:30,873 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 44 states. [2020-10-13 23:50:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:31,210 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2020-10-13 23:50:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 23:50:31,210 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 135 [2020-10-13 23:50:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:31,211 INFO L225 Difference]: With dead ends: 197 [2020-10-13 23:50:31,211 INFO L226 Difference]: Without dead ends: 144 [2020-10-13 23:50:31,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 23:50:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-13 23:50:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-13 23:50:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 23:50:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-13 23:50:31,217 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 135 [2020-10-13 23:50:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:31,217 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-13 23:50:31,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-13 23:50:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-13 23:50:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:50:31,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:31,219 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:31,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:50:31,219 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1697439162, now seen corresponding path program 41 times [2020-10-13 23:50:31,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:31,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396206247] [2020-10-13 23:50:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:50:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5550 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 23:50:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-13 23:50:37,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396206247] [2020-10-13 23:50:37,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:37,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-13 23:50:37,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478426188] [2020-10-13 23:50:37,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-13 23:50:37,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-13 23:50:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 23:50:37,881 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 45 states. [2020-10-13 23:50:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:38,358 INFO L93 Difference]: Finished difference Result 201 states and 206 transitions. [2020-10-13 23:50:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 23:50:38,358 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 138 [2020-10-13 23:50:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:38,360 INFO L225 Difference]: With dead ends: 201 [2020-10-13 23:50:38,360 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 23:50:38,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 23:50:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 23:50:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-13 23:50:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 23:50:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-10-13 23:50:38,367 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 138 [2020-10-13 23:50:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:38,368 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-10-13 23:50:38,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-13 23:50:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-10-13 23:50:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 23:50:38,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:38,369 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:38,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:50:38,369 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:38,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash -764109102, now seen corresponding path program 42 times [2020-10-13 23:50:38,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:38,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341698811] [2020-10-13 23:50:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:44,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:44,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 23:50:44,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:44,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5643 [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:50:44,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:45,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2020-10-13 23:50:45,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341698811] [2020-10-13 23:50:45,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:45,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-13 23:50:45,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654523441] [2020-10-13 23:50:45,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-13 23:50:45,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-13 23:50:45,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 23:50:45,143 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 46 states. [2020-10-13 23:50:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:45,630 INFO L93 Difference]: Finished difference Result 205 states and 210 transitions. [2020-10-13 23:50:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 23:50:45,631 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 141 [2020-10-13 23:50:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:45,633 INFO L225 Difference]: With dead ends: 205 [2020-10-13 23:50:45,633 INFO L226 Difference]: Without dead ends: 150 [2020-10-13 23:50:45,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 23:50:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-13 23:50:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-13 23:50:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 23:50:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-10-13 23:50:45,640 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 141 [2020-10-13 23:50:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:45,641 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-10-13 23:50:45,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-13 23:50:45,641 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-10-13 23:50:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 23:50:45,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:45,642 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:45,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:50:45,642 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash 263907646, now seen corresponding path program 43 times [2020-10-13 23:50:45,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:45,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645414992] [2020-10-13 23:50:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 23:50:51,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5349 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 23:50:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:52,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:50:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2020-10-13 23:50:52,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645414992] [2020-10-13 23:50:52,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:50:52,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-13 23:50:52,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759071826] [2020-10-13 23:50:52,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-13 23:50:52,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:52,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-13 23:50:52,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 23:50:52,226 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 47 states. [2020-10-13 23:50:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:52,688 INFO L93 Difference]: Finished difference Result 209 states and 214 transitions. [2020-10-13 23:50:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 23:50:52,689 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 144 [2020-10-13 23:50:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:52,690 INFO L225 Difference]: With dead ends: 209 [2020-10-13 23:50:52,691 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:50:52,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 23:50:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:50:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-10-13 23:50:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 23:50:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2020-10-13 23:50:52,697 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 144 [2020-10-13 23:50:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:52,698 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2020-10-13 23:50:52,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-13 23:50:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2020-10-13 23:50:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 23:50:52,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:52,699 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:52,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:50:52,699 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash -12909234, now seen corresponding path program 44 times [2020-10-13 23:50:52,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:52,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374755300] [2020-10-13 23:50:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:58,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 23:50:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5902 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0